YAREMKO, Oleg; YAREMKO, Natalia. Transformation operators and their applications for modeling in two-layer media. Global Journal of Mathematical Analysis, [S. l.], v. 2, n. 4, p. 227–234, 2014. DOI: 10.14419/gjma.v2i4.3289. Disponível em: https://www.sciencepubco.com/index.php/GJMA/article/view/3289.. Acesso em: 3 may. 2024.