Korchagin, A.Yu., and V.Yu. Korolev. “Prediction of Financial Risks Using a Modified Grid Method Sliding Separation Precipitation Shear Mixtures of Normal Laws ”. Bulletin of the Karaganda University. Mathematics Series, vol. 78, no. 2, June 2015, pp. 65-74, http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/25.