Dragičević, Vesna D., Igor Spasojević, Milena Simić, Kovačević Dušan, and Milan Brankov. 2014. “Effects of Different Cropping Systems and Weed Management Methods on Free Energy and Content of Pigments in Maize”. Pesticides and Phytomedicine / Pesticidi I Fitomedicina 29 (1). https://doi.org/10.2298/pif.v29i1.4920.