Arushanian, O., and N. Volchenskova. “Numerical Analysis Library (Research Computer Center, Moscow State University)”. Numerical Methods and Programming (Vychislitel’nye Metody I Programmirovanie), vol. 3, no. 3, May 2002, pp. 1-6, https://en.num-meth.ru/index.php/journal/article/view/69.