1. N. N. Vorob’ev, Theory of Games for Cybernetics Economists (Nauka, Moscow, 1985) [in Russian].
2. B. Z. Vulikh, Brief Course of the Theory of Functions of a Real Variable (Nauka, Moscow, 1973) [in Russian].
3. H. Gajewski, K. Gröger, and K. Zacharias, Nichtlineare Operatorgleichungen und Operatordifferentialgleichungen (Akademie, Berlin, 1974).
4. L. V. Kantorovich and G. P. Akilov, Functional Analysis (Pergamon, Oxford, 1982).
5. M. O. Korpusov, “Global solvability conditions for an initial-boundary value problem for a nonlinear equation of pseudoparabolic type,” Differ. Equations 41 (5), 712–720 (2005).