Bastida, S., Sánchez-Muniz, F.J. and Trigueros, G. 2003. Colorimetric test application to the efficiency and shelf-life assessments of olive oil, sunflower oil and their blend used for frying frozen and fresh foods. Grasas y Aceites. 54, 1 (Mar. 2003), 32–40. DOI:https://doi.org/10.3989/gya.2003.v54.i1.274.