Arushanian, O., and S. Zaljotkin. “General Description of Subroutines for Solving Ordinary Differential Equations from the Numerical Analysis Library (Research Computer Center, Moscow State University)”. Numerical Methods and Programming (Vychislitel’nye Metody I Programmirovanie), vol. 4, no. 4, Nov. 2003, pp. 7-15, https://en.num-meth.ru/index.php/journal/article/view/109.