Solving problem on faithful transfer of Sommerfeld radiation condition to a boundary of a bounded in 3D space. Journal of Mathematics Mechanics and Computer Science, [S. l.], v. 74, n. 3, p. 34–40, 2012. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/147. Acesso em: 5 jul. 2026.