Khusanov, B., and Kulmirzaeva Gulrabo Abduganiyevna. “The Lyapunov Construction Function for a System of Simple Differential Equations”. American Journal of Science and Learning for Development 2, no. 3 (March 24, 2023): 89–91. Accessed November 21, 2024. https://inter-publishing.com/index.php/AJSLD/article/view/1284.