V. A. Chernetskii, “Projective method for equation of risk theory in the arithmetic case”, Ukr. Mat. Zhurn., vol. 65, no. 4, pp. 565–582, Apr. 2013, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2440