TEYMURAZYAN, R. R. TWO SIDE ESTIMATES FOR THE DOUBLE OBSTACLE PROBLEM. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 43, n. 1 (218), p. 8–15, 2009. DOI: 10.46991/PYSU:A/2009.43.1.008. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol43_no1_2009_pp008-015. Acesso em: 27 nov. 2024.