SAMOILENKO, A. M.; STEPANETS, O. I.; SHEVCHUK, I. A. The international conference „International workshop on analysis and its applications". Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 56, n. 12, p. 1722, 2004. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3880. Acesso em: 5 dec. 2025.