Bystrická, Judita, Petra Kavalcová, Alena Vollmannová, Ján Tomáš, and Matyáš Orsák. “The Role of Sulphur on the Content of Total Polyphenols and Antioxidant Activity in Onion (Allium Cepa L.)”. Potravinarstvo Slovak Journal of Food Sciences 8, no. 1 (November 17, 2014): 284–289. Accessed October 13, 2024. https://potravinarstvo.com/journal1/index.php/potravinarstvo/article/view/401.