KAMALYAN, A.H.; KARAKHANYAN, M.I. ON SOLVABILITY OF SOME BOUNDARY PROBLEM. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 54, n. 1 (251), p. 29–34, 2020. DOI: 10.46991/PYSU:A/2020.54.1.029. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol54_no1_2020_pp029-034. Acesso em: 18 may. 2024.