K. SELVAM. New Approach to Find the Maxima and Minima of a Function. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 4, p. 263–266, 2018. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/351. Acesso em: 3 may. 2024.