P. . Kavalcová, J. . Bystrická, J. . Tomáš, J. . Karovičová, and V. . Kuchtová, “Evaluation and comparison of the content of total polyphenols and antioxidant activity in onion, garlic and leek”, Potr. S. J. F. Sci., vol. 8, no. 1, pp. 272–276, Nov. 2014.