ASHRAF, S.; HUSSAIN, M.; MUMTAZ, M. W.; SHUAIB, M. Biodiesel Production by Alkali Catalyzed Transesterification of chicken and beef fats. International Journal of Alternative Fuels and Energy, [S. l.], v. 1, n. 1, p. 14-20, 2017. Disponível em: https://journals.psmpublishers.org/index.php/ijafe/article/view/130. Acesso em: 13 jul. 2020.