Kilic, Omer, and Fethi Ahmet Ozdemir. 2016. “In Vitro Callus Culture and These Callus Essential Oil Compositions of Ten Populations Hypericum Scabrum L. From Turkey”. Progress in Nutrition 18 (2): 166-75. https://mattioli1885journals.com/index.php/progressinnutrition/article/view/5043.