UPADHYAY, D.K.; PALAIAN, S.; KISHORE, P.V.; PAUDEL, R.; PRABHU, M.; SHANKAR, P.R.; MISHRA, P. Tramadol. Journal of Institute of Medicine Nepal, [S. l.], v. 28, n. 3, p. 57–61, 2006. DOI: 10.59779/jiomnepal.268. Disponível em: https://jiomnepal.edu.np/index.php/jiomnepal/article/view/268. Acesso em: 22 sep. 2025.