Perov, V. O., A. S. Vakulenko, and O. K. Yakunin. “TECHNOLOGICAL FEATURES OF THE CREATION AND USE OF THE SECTORAL ELECTRIC COMMERCE”. Science and Transport Progress , no. 25 (December 25, 2008): 168–171. Accessed May 5, 2024. https://stp.ust.edu.ua/article/view/14454.