Hul Ivan Grygorovych, Zavydivska Olga Igorivna, Moroz Volodymyr Pavlovych и Mandryk Vasyl Olegovych 2020. ECONOMIC AND MATHEMATICAL MODEL FOR FORECASTING DIRECTIONS OF DEVELOPMENT OF HUNTING ENTERPRISES. Научный журнал «Вестник НАН РК» . 3 (июн. 2020), 132–139.