A Boundary-Value Problem for Weakly Nonlinear Hyperbolic Equations with Data on the Entire Boundary of a Domain von Bilusyak, N.I., Ptashnik, B. I., Білусяк, Н. І., Пташник, Б. Й.

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Boundary-Value Problem for Weakly Nonlinear Hyperbolic Equations with Variable Coefficients von Bilusyak, N.I., Ptashnik, B. I., Білусяк, Н. І., Пташник, Б. Й.

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Dirichlet-Type Problems for Systems of Partial Differential Equations Unresolved with Respect to the Highest Time Derivative von Bilusyak, N.I., Komarnyts'ka, L. I., Ptashnik, B. I., Білусяк, Н. І., Комарницька, Л. І., Пташник, Б. Й.

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