Izv. Vyssh. Uchebn. Zaved. Mat., 1974 Number 1, Pages 3–14
(Mi ivm4164)
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The linearity of systems of two first order partial differential equations
S. J. Bilchev Ruse (Bulgaria)
UDC:
513.731
Received: 05.05.1971
English version:
Soviet Mathematics (Izvestiya VUZ. Matematika), 1974,
18:1,
1–10
Bibliographic databases:
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