Tomaszewska-Gras, J. “Multivariate Analysis of Seasonal Variation in the Composition and Thermal Properties of Butterfat With an Emphasis on Authenticity Assessment”. Grasas y Aceites 67, no. 4 (December 30, 2016): e167. Accessed April 20, 2024. https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1633.