Functions with nondegenerate critical points on the boundary of the surface by B. I. Hladysh, O. O. Pryshliak

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Approximation by Norlund means of quadratical partial sums of double Walsh - Kaczmarz - Fourier series by K. Nagy

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Normality of the Orlicz - Sobolev classes by V. I. Rjazanov, R. R. Salimov, E. A. Sevostjanov

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Initial-boundary-value problem for a semilinear parabolic equation with nonlinear nonlocal boundary conditions by A. L. Gladkov, T. V. Kavitova

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Relationship between normalized tensors of two regular networks on the surfaces in the Euclidean space E_3 by I. V. Potapenko

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Contribution to Ecology of Brandt's Bat, Myotis brandtii (Chiroptera, Vespertilionidae), in the North-Eastern Ukraine: Comparison of Local Summer and Winter Bat Assamblage... by A. Vlaschenko, V. Hukov, A. Naglov, A. Prylutska, K. Kravchenko, O. Rodenko

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The Analysis of Heavy Metal Concentrations in Eggs of Collared Fly-catchers, Ficedula albicollis (Passeriformes, Muscicapidae), and Tits, Parus major, Parus caeruleus (Passeriforme... by A. B. Chaplygina, D. I. Yuzyk

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The Mass-Dimension Relationships in the Mussels Mytilus galloprovincialis (Mollusca, Bivalvia) from Diff erent Phenotypical Groups in Periphyton Populations near Odessa Coast, the... by I. A. Govorin

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Redstart Bird (Passeriformes, Muscicapidae) with Non-Typical Plumage — Interspecific Hybrid or Eastern Subspecies in Fauna of Ukraine by H. V. Fesenko, Yu. Shybanov

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Food Habits of the Endemic Long Legged Wood Frog, Rana Pseudodalmatina (Amphibia, Ranidae), in Northern Iran by M. Najibzadeh, A. Gharzi, N. Rastegar-Pouyani, E. Rastegar-Pouyani, A. Pesarakloo

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The Robin, Erithacus Rubecula (Passeriformes, Turdidae), as a Component of Autotrophic Consortia of Forest Cenoses, Northeast Ukraine by A. B. Chaplygina, D. I. Yuzyk, N. O. Savynska

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Amphipod (Crustacea, Amphipoda) Communities in the North-Western Part of the Black Sea by S. A. Kudrenko

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Ornithological Fauna of the Waste Water Treatment Plants in the Northern Left -Bank Ukraine (Chernihiv and Kyiv Regions): Winter Populations and Ecological Structure by O. M. Fedun, I. V. Davydenko

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The Robin, Erithacus rubecula (Passeriformes, Turdidae), as a Component of Heterotrophic Consortia of Forest Cenoses, Northeast Ukraine. Part 2 by A. V. Chaplygina, D. I. Yuzyk, N. O. Savynska

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Key to the Species of Ukrainian Notodontid Moths (Lepidoptera, Notodontidae) on the Egg Characters by I. V. Dolinskaya

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A note on similarity to contraction for stable companion (2x2)-matrices by W. Auzinger

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Existence of positive solutions for nonlinear third-order m-point impulsive boundary-value problems on time scales by F. T. Fen, I. Y. Karaca

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Existence and nonexistence of solutions of reaction-diffusion equation with Robin boundary condition by E. Öztürk, K. Kallı

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A note on degree of approximation by matrix means in generalized Hцlder metric by U. Deрer

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Nonlinear oscillations of topological structures in the sine-Gordon systems by M. M. Bogdan, O. V. Charkina

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