KUSHERBAYEVA, U. R. Initial–boundary problems for Beltrami equation with polar singularity in unbounded domain. Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 71, n. 4, p. 59–61, 2011. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/221. Acesso em: 22 dec. 2024.