Matіуchuk M. I.; EDELMAN, S. D. On fundamental solutions of elliptical systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 18, n. 2, p. 22–41, 1966. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8714. Acesso em: 17 apr. 2025.