Musilová, Janette, Jaromí­r Lachman, Judita Bystrická, Zuzana Poláková, Peter Kováčik, and Diana Hrabovská. 2013. “The Changes of the Polyphenol Content and Antioxidant Activity in Potato Tubers (Solanum Tuberosum L.) Due to Nitrogen Fertilization”. Potravinarstvo Slovak Journal of Food Sciences 7 (1):164-70. https://doi.org/10.5219/305.