Sobień, Bartosz, Anna Tyrka, Grzegorz Kopeć, and Piotr Podolec. 2013. “Plant Sterols ? Current Knowledge and Recommendations”. Medycyna Faktow (J EBM) 6 (2(19), 15-21. https://www.journalsmededu.pl/index.php/jebm/article/view/2410.