JUMANIYAZOV NIZOMJON BAKHTIYOROVICH. An analysis of the decline of mathematics learning in developing countries in the 21st century. Journal of Applied Science and Social Science, [S. l.], v. 15, n. 10, p. 1278–1281, 2025. Disponível em: https://www.internationaljournal.co.in/index.php/jasass/article/view/2214. Acesso em: 6 mar. 2026.