López Martínez, M., & García Villanova, R. (1968). Possibilities for the determination of acids of fats and vegetable oils by indirect complexometry with Pb (II) and establishment of a new index in them called "Complexometric". II.- Determination of olive, soy, peanut, sunflower and cotton oils. Ars Pharmaceutica (Internet), 9(11-12), 425–432. Recuperado a partir de https://revistaseug.ugr.es/index.php/ars/article/view/7807