References
- Vekua IN. Generalized analytic functions. London: Pergamon Press; 1962.
- Bers L. Theory of pseudo-analytic functions. New York (NY): New York University; 1953.
- Bers L, John F, Shechter M. Partial differential equations. New York (NY): Interscience; 1964.
- Mukhamadiev È, Baǐzaev S. On the theory of bounded solutions of a generalized Cauchy–Riemann system. Sov. Math. Dokl. 1986;33:381–384.
- Ospanov KN. Coercive solvability of the generalized Cauchy–Riemann system in the space Lp(E). Ukrain. Mat. Zh. 1996;48:1768–1775.
- Ospanov KN. On the nonlinear generalized Cauchy–Riemann system on the whole plane. Siberian Math. J. 1997;38:314–319.
- Ospanov KN. Solvability conditions for the first order elliptic systems on the plane. Eur. Math. J. 2012;3:139–142.
- Bojmatov KKh. Separation theorems, weighted spaces and their applications. Proc. Steklov Inst. Math. 1987;170:39–81.
- Muratbekov MB, Ospanov KN, Igisinov S. Solvability of a class of mixed type second order equations and nonlocal estimates. Appl. Math. Lett. 2012;25:1661–1665.
- Muratbekov MB, Otelbaev M. Smoothness and approximation properties for solutions of a class of nonlinear equations of Schrödinger type. Sov. Math. (Iz. VUZ). 1989;33:68–74.
- Ospanov KN. Coercive estimates for degenerate elliptic system of equations with spectral applications. Appl. Math. Lett. 2011;24:1594–1598.
- Otelbaev M. Embedding theorems for weighted spaces and their applications in the study of the spectrum of the Schrödinger operator. Proc. Steklov Inst. Math. 1981;4:281–321.
- Otelbaev M. Coercive estimates and separation theorems for elliptic equations in Rp. Proc. Steklov Inst. Math. 1984;3:213–239.
- Vinogradov VS. Liouville theorems for an equation of generalized analytic functions. Sov. Math. Dokl. 1968;9:1395–1399.
- Gokhberg ITs, Krein MG. Introduction to the theory of linear non-self-adjoint operator. Moscow: Nauka; 1965.