CHERNETSKII, V. A. Projective method for equation of risk theory in the arithmetic case. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 4, p. 565–582, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2440. Acesso em: 5 dec. 2025.