KOLTUNOV В., and VOVK М. 2010. “rade stimation of umpkin ortszoned in olisskiy egion of kraine”. NTERNATIONAL CIENTIFIC-RACTICAL OURNAL OMMODITIES ND ARKETS 8 (2):101-8. https://journals.knute.edu.ua/commodities-and-markets/article/view/1671.