VASIĽ, Michal. The evaluation of chlorophyll and total carotenoid content in leaves of sweet potato according to variety and harvesting date. 2019. 35 s. Diplomová práca (Ing.). - Katedra zeleninárstva FZKI SPU v Nitre. Dostupné na internete: <http://opac.crzp.sk/openURL?crzpSigla=spunitra&crzpID=33318>