Problem with nonlocal conditions for weakly nonlinear hyperbolic equations von Goi, T. P., Ptashnik, B. I., Гой, Т. П., Пташник, Б. Й.

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Nonlocal boundary-value problems for systems on linear partial differential equations von Goi, T. P., Ptashnik, B. I., Гой, Т. П., Пташник, Б. Й.

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