K. KRISHNAKUMAR. The extended tanh method for certain system of nonlinear ordinary differential equations. Malaya Journal of Matematik, India, v. 2, n. 02, p. 133–140, 2014. DOI: 10.26637/mjm202/005. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/399. Acesso em: 24 nov. 2024.