AVETISYAN, M.H. ON SOLVABILITY OF A NONLINEAR DISCRETE SYSTEM IN THE SPREAD THEORY OF INFECTION. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 54, n. 2 (252), p. 87–95, 2020. DOI: 10.46991/PYSU:A/2020.54.2.087. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol54_no2_2020_pp087-095. Acesso em: 18 may. 2024.