de Sousa, L. V., A. P. B. Santos, L. Di Souza, A. G. D. Santos, and A. Beatriz. “Evaluation of the Properties of Calotropis Procera Oil Aiming the Production of Biodiesel”. Orbital: The Electronic Journal of Chemistry, Vol. 10, no. 2, Apr. 2018, pp. 147-52, https://periodicos.ufms.br/index.php/orbital/article/view/16368.