Rаhmаtjоnzоdа Аhrоrjоn Аhmаd о‘g‘li. MATHEMATICAL CONCEPTS. International Multidisciplinary Journal for Research & Development, [S. l.], v. 11, n. 02, 2024. Disponível em: https://www.ijmrd.in/index.php/imjrd/article/view/1045. Acesso em: 8 aug. 2025.