KHACHATRYAN, A.; KHACHATRYAN, K. On Solvability of One Infinite System of Nonlinear Functional Equations in the Theory of Epidemics. Eurasian Mathematical Journal, [S. l.], v. 11, n. 2, p. 52–64, 2020. DOI: 10.32523/2077-9879-2020-11-2-52-64. Disponível em: https://emj.enu.kz/index.php/main/article/view/178. Acesso em: 28 sep. 2026.