Ashimov, Abdykappar, and Yuriy Borovskiy. “Evaluation of a Germ Stability of a Differentiable Mapping Defined by a Mathematical Model”. Advances in Systems Science and Applications 16, no. 2 (June 30, 2016): 1-14. Accessed September 26, 2022. https://ijassa.ipu.ru/index.php/ijassa/article/view/347.