KOLTUNOV В., and VOVK М. 2010. “rade stimation of umpkin ortszoned in olisskiy egion of kraine”. "INTERNATIONAL·SCIENTIFIC-·PRACTICAL·JOURNAL·COMMODITIES·AND·MARKETS" 8 (2):101-8. https://journals.knute.edu.ua/commodities-and-markets/article/view/1671.