Karaoglu, O., G. Alpdogan, I. S. Ozdemir, and E. Ertas. “Solid Phase Extraction of β-Sitosterol and α-Tocopherol from Sunflower Oil Deodorizer Distillate Using Desilicated Zeolite”. Grasas Y Aceites, vol. 71, no. 3, Sept. 2020, p. e370, doi:10.3989/gya.0570191.