Kocheva, K., Chavdarova, M., Gesheva, E., Doncheva, S., & Georgiev, G. (2015). Implementation of a kinetic model for evaluation of leaf ion leakage from sunflower (Helianthus annuus) plants subjected to high zinc and lead concentrations. Project BG051PO001-3.3.06-0025 "Support for training and development of young competitive research experts in the field of physiology, phytochemistry, genomics, proteomics and biodiversity of eukaryotic organisms. с. 23-28.