Kovalchuk, Svitlana, Dmytro Kobets, and Ludmyla Dybchuk. “Formation of a System Approach to the Optimization of Marketing Management at an Enterprise”. Eastern-European Journal of Enterprise Technologies 3, no. 4(81) (June 21, 2016): 4–12. Accessed July 18, 2024. https://journals.uran.ua/eejet/article/view/70540.