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    <item>
      <title>Uniqueness of solutions of impulsive hyperbolic differential-functional equations</title>
      <pubDate>Tue, 24 Mar 2026 03:01:59 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4603</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4603</guid>
      <author>Janiszewska-Walczak, D.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Janiszewska-Walczak, D.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On the Levy-Baxter theorems for shot-noise fields. III</title>
      <pubDate>Tue, 24 Mar 2026 03:01:59 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4604</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4604</guid>
      <author>Buldygin, V. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Buldygin, V. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On boundedness of square means for the logarithms of Blaschke products</title>
      <pubDate>Tue, 24 Mar 2026 03:01:59 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4605</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4605</guid>
      <author>Kondratyuk, Ya. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Kondratyuk, Ya. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On analytic solutions of nonlinear differential functional equations with nonlinear deviations of arguments</title>
      <pubDate>Tue, 24 Mar 2026 03:01:58 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4602</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4602</guid>
      <author>Pelyukh, G. P.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Pelyukh, G. P.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Continuous approximations of discontinuous nonlinearities of semilinear elliptic-type equations</title>
      <pubDate>Tue, 24 Mar 2026 03:01:57 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4601</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4601</guid>
      <author>Iskakov, R. S.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Iskakov, R. S.</dc:creator>
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    <item>
      <title>On the practical $μ$-stability of solutions of standard systems with delay</title>
      <pubDate>Tue, 24 Mar 2026 03:01:56 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4599</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4599</guid>
      <author>Martynyuk, A. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Martynyuk, A. A.</dc:creator>
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    <item>
      <title>Stabilization for a finite time in problems with free boundary for some classes of nonlinear second-order equations</title>
      <pubDate>Tue, 24 Mar 2026 03:01:56 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4600</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4600</guid>
      <author>Berezansky, Yu. M.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Berezansky, Yu. M.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On a problem of restoration of curves</title>
      <pubDate>Tue, 24 Mar 2026 03:01:54 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4597</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4597</guid>
      <author>Ligun, A. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Ligun, A. A.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Solution of boundary-value problems for elliptic equations in the space of distributions</title>
      <pubDate>Tue, 24 Mar 2026 03:01:54 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4598</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4598</guid>
      <author>Lopushanskaya, G. P.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Lopushanskaya, G. P.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On the connection between certain inequalities of the Kolmogorov type for periodic and nonperiodic functions</title>
      <pubDate>Tue, 24 Mar 2026 03:01:53 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4594</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4594</guid>
      <author>Babenko, V. F.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Babenko, V. F.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On equivariant extensions of a differential operator by the example of the Laplace operator in a circle</title>
      <pubDate>Tue, 24 Mar 2026 03:01:53 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4595</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4595</guid>
      <author>Burskii, V. P.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Burskii, V. P.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Asymptotic integration of systems of integro-differential equations with degeneracies</title>
      <pubDate>Tue, 24 Mar 2026 03:01:53 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4596</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4596</guid>
      <author>Zavizion, G. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Zavizion, G. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Linear singularly perturbed problems with pulse influence</title>
      <pubDate>Tue, 24 Mar 2026 03:01:48 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4592</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4592</guid>
      <author>Mel&amp;#039;nik, T. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Mel&amp;#039;nik, T. A.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Group analysis of boundary-value problems of mathematical physics</title>
      <pubDate>Tue, 24 Mar 2026 03:01:48 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4593</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4593</guid>
      <author>Netesova, T. M.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Netesova, T. M.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Visiting measures and an ergodic theorem for a sequence of iterations with random perturbations</title>
      <pubDate>Tue, 24 Mar 2026 03:01:46 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4590</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4590</guid>
      <author>Dorogovtsev, A. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Dorogovtsev, A. A.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>On types of distributions of sums of one class of random power series with independent identically distributed coefficients</title>
      <pubDate>Tue, 24 Mar 2026 03:01:46 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4591</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4591</guid>
      <author>Litvinyuk, A. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Litvinyuk, A. A.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>On exact constants in inequalities for norms of derivatives on a finite segment</title>
      <pubDate>Tue, 24 Mar 2026 03:01:43 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4588</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4588</guid>
      <author>Babenko, V. F.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Babenko, V. F.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Condition number of the matrix of transition to the normal Jordan form</title>
      <pubDate>Tue, 24 Mar 2026 03:01:43 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4589</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4589</guid>
      <author>Grabovskii, O. I.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Grabovskii, O. I.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>On the order of growth of solutions of algebraic differential equations</title>
      <pubDate>Tue, 24 Mar 2026 03:01:42 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4584</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4584</guid>
      <author>Mokhonko, A. Z.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Mokhonko, A. Z.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Hierarchy of the Kadomtsev-Petviashvili equations under nonlocal constraints: Many-dimensional generalizations and exact solutions of reduced system</title>
      <pubDate>Tue, 24 Mar 2026 03:01:42 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4585</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4585</guid>
      <author>Samoilenko, A. M.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Samoilenko, A. M.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Necessary and sufficient conditions for the oscillation of solutions of nonlinear differential equations with pulse influence in a banach space</title>
      <pubDate>Tue, 24 Mar 2026 03:01:42 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4586</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4586</guid>
      <author>Slyusarchuk, V. E.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Slyusarchuk, V. E.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Pairwise products of moduli of families of curves on a Riemannian Möbius strip</title>
      <pubDate>Tue, 24 Mar 2026 03:01:41 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4587</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4587</guid>
      <author>Okhrimenko, S. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Okhrimenko, S. A.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Local properties of gaussian random fields on compact symmetric spaces and theorems of the Jackson-Bernstein type</title>
      <pubDate>Tue, 24 Mar 2026 03:01:39 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4583</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4583</guid>
      <author>Malyarenko, A. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Malyarenko, A. A.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Basic boundary-value problems for one equation with fractional derivatives</title>
      <pubDate>Tue, 24 Mar 2026 03:01:38 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4582</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4582</guid>
      <author>Lopushanskaya, G. P.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Lopushanskaya, G. P.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Decomposability of topological groups</title>
      <pubDate>Tue, 24 Mar 2026 03:01:36 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4581</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4581</guid>
      <author>Zelenyuk, E. G.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Zelenyuk, E. G.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Asymptotics of the logarithmic derivative of an entire function of zero order</title>
      <pubDate>Tue, 24 Mar 2026 03:01:35 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4580</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4580</guid>
      <author>Zabolotskii, N. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Zabolotskii, N. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Tables of Contents, Volume 52, Numbers 1–12, 2000</title>
      <pubDate>Tue, 24 Mar 2026 03:01:30 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4577</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4577</guid>
      <author>EditorialBoard</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>EditorialBoard</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>On the Levy-Baxter theorems for shot-noise fields. II</title>
      <pubDate>Tue, 24 Mar 2026 03:01:30 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4579</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4579</guid>
      <author>Buldygin, V. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Buldygin, V. V.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>On Inequalities of the Landau–Kolmogorov–Hörmander Type on a Segment and Real Straight Line</title>
      <pubDate>Tue, 24 Mar 2026 03:01:29 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4571</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4571</guid>
      <author>Kofanov, V. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Kofanov, V. A.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Approximation of Periodic Analytic Functions by Interpolation Trigonometric Polynomials</title>
      <pubDate>Tue, 24 Mar 2026 03:01:29 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4572</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4572</guid>
      <author>Serdyuk, A. S.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Serdyuk, A. S.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On One Counterexample in Convex Approximation</title>
      <pubDate>Tue, 24 Mar 2026 03:01:29 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4576</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4576</guid>
      <author>Yushchenko, L. P.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Yushchenko, L. P.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>On differentiability of mappings of finite-dimensional domains into Banach spaces</title>
      <pubDate>Tue, 24 Mar 2026 03:01:29 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4578</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4578</guid>
      <author>Bondar, A. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Bondar, A. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Criteria for the Asymptotic Stability of Solutions of Dynamical Systems</title>
      <pubDate>Tue, 24 Mar 2026 03:01:28 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4573</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4573</guid>
      <author>Valeyev, K. G.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Valeyev, K. G.</dc:creator>
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    <item>
      <title>Groups Proper Nonmaximal Subgroups of Which Are Cyclic or Minimal Noncyclic</title>
      <pubDate>Tue, 24 Mar 2026 03:01:28 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4574</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4574</guid>
      <author>Koval, Т. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Koval, Т. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Joint Continuity and Quasicontinuity of Horizontally Quasicontinuous Mappings</title>
      <pubDate>Tue, 24 Mar 2026 03:01:27 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4575</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4575</guid>
      <author>Maslyuchenko, V. K.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Maslyuchenko, V. K.</dc:creator>
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    <item>
      <title>$V$-Limit Analysis of Vector-Valued Mappings</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4570</link>
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      <title>Dynamic Game Problems of Approach for Fractional-Order Equations</title>
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