EL-KALAAWY, Omar. Bäcklund transformation, auto-Bäcklund transformation and exact solutions for KdV-type equations. International Journal of Basic and Applied Sciences, [S. l.], v. 3, n. 4, p. 466–478, 2014. DOI: 10.14419/ijbas.v3i4.3617. Disponível em: https://sciencepubco.com/index.php/ijbas/article/view/3617.. Acesso em: 28 apr. 2024.