FIGUEROA-VALVERDE, LAURO, et al. “Synthesis and Antibacterial Activity of Pregnenolone- Carbamazepine Conjugate on Proteus Mirabilis”. Asian Journal of Chemistry, vol. 21, no. 9, Mar. 2010, pp. 7173-81, https://asianpubs.org/index.php/ajchem/article/view/12199.