MIKAYELYAN, L.V. ON A VERSION OF FIXED POINT THEOREM. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 52, n. 2 (246), p. 84–87, 2018. DOI: 10.46991/PYSU:A/2018.52.2.084. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol52_no2_2018_pp084-087. Acesso em: 20 may. 2024.