PRAZDNIKOVA, N.N., and N.G. PRUDNIKOVA. “CUSTOMER LOYALTY PROGRAM AS A TOOL AFTER-SALES SERVICE IN E-COMMERCE”. Siberian Journal of Tourism and Economic 1, no. 12 (December 30, 2020): 62-70. Accessed December 23, 2025. https://journal.asu.ru/st/article/view/9106.