References
M. Kh. Shkhanukov, “Several Boundary Value Problems for the Third-Order Equation in the Models of Fluids Filtration in Porous Media,” Differents. Uravneniya 18(4) 689–699 (1982).
A. M. Nakhushev, Equations in the Mathematical Biology (Vysshaya Shkola, Moscow, 1995) [in Russian].
M. K. Fage and N. I. Nagnibida, The Problem on Equivalence of Ordinary Linear Differential Operators (Nauka, Novosibirsk, 1987) [in Russian].
B. A. Bondarenko, Basis Systems of Polynomial and Quasipolynomial Solutions to Partial Differential Equations (FAN, Tashkent, 1987) [in Russian].
V. I. Zhegalov and A. N. Mironov, Differential Equations with Major Partial Derivatives (Kazansk. Matem. Ob-vo, Kazan, 2001) [in Russian].
V. I. Zhegalov, “On a System of Higher Order Equations of Mixed Type,” Izv. Vyssh. Uchebn. Zaved., Mat., No. 6, 25–35 (1975) [Soviet Mathematics 19 (6), 23–33 (1975)].
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Original Russian Text © O.A. Koshcheeva, 2007, published in Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika, 2007, No. 6, pp. 45–54.
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Koshcheeva, O.A. Depression conditions for linear equations with major partial derivatives. Russ Math. 51, 42–51 (2007). https://doi.org/10.3103/S1066369X07060060
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DOI: https://doi.org/10.3103/S1066369X07060060