Dobarganes, M. C., and G. Márquez-Ruiz. “Quality Control of Used Frying Fats. Validity of Quick Tests to Substitute Polar Compound Determination”. Grasas y Aceites 46, no. 3 (June 30, 1995): 196–201. Accessed March 29, 2024. https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/924.