A Multipoint Problem for Pseudodifferential Equations von Klyus, I. S., Ptashnik, B. I., Клюс, І. С., Пташник, Б. Й.

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A multipoint problem for partial differential equations unresolved with respect to the higher time derivative von Klyus, I. S., Ptashnik, B. I., Клюс, І. С., Пташник, Б. Й.

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Multipoint problem for hyperbolic equations with variable coefficients von Vasylyshyn, P. B., Klyus, I. S., Ptashnik, B. I., Василишин, П. Б., Клюс, І. С., Пташник, Б. Й.

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