ERMATOV, S. L. Non-Standard Methods for Solving Trigonometric Inequalities. American Journal of Public Diplomacy and International Studies (2993-2157), [S. l.], v. 1, n. 2, p. 11–16, 2023. Disponível em: http://grnjournal.us/index.php/AJPDIS/article/view/102. Acesso em: 22 dec. 2024.