Івченко, Наталія Борисівна, and Людмила Володимирівна Лимар. “Mathematical Model of Promotion the Company Based on Using the Website”. Eastern-European Journal of Enterprise Technologies 3, no. 4(51) (January 7, 2012): 34–37. Accessed July 18, 2024. https://journals.uran.ua/eejet/article/view/1573.