Purtafti, Somaye Ayughi, Reihaneh Ahmadzadeh Ghavidel, and Soodabeh Einafshar. 2015. “Determination of Total Carotenoid Content in Safflower Flower Using Cold Solvent and Ultrasonic Waves ”. International Journal of Review in Life Sciences 5 (4), 108-12. https://scienztech.org/index.php/ijrls/article/view/1036.