Aisagaliev S. А., and A. M. Ayazbayeva. “Improper Integrals for Stability Theory of Multidimensional Regulated Systems”. Journal of Mathematics, Mechanics and Computer Science 95, no. 3 (August 22, 2018): 3–20. Accessed October 13, 2024. https://bm.kaznu.kz/index.php/kaznu/article/view/464.