Oscillation criteria for higher order nonlinear functional differential equations with advanced argument by Koplatadze, R.

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On oscillation of solutions of second order nonlinear difference equations by Koplatadze, R., Pinelas, S.

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Oscillation criteria for first order linear difference equations with several delay arguments by Koplatadze, R., Pinelas, S.

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On higher order generalized Emden-Fowler differential equations with delay argument by Domoshnitsky, A., Koplatadze, R.

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Oscillation criteria for difference equations with several retarded arguments by Koplatadze, R., Khachidze, N.

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Necessary conditions for existence of positive solutions of second order linear difference equations and sufficient conditions for oscillation of solutions by Koplatadze, R., Kvinikadze, G.

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Specific properties in solutions of differential equations with a deviating argument by Koplatadze , R. G., Коплатадзе , Р. Г.

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