Jasek, Pavel, Lenka Vrana, Lucie Sperkova, Zdenek Smutny, and Marek Kobulsky. “Comparative Analysis of Selected Probabilistic Customer Lifetime Value Models in Online Shopping”. Journal of Business Economics and Management 20, no. 3 (April 5, 2019): 398-423. Accessed December 16, 2024. https://ijspm.vgtu.lt/index.php/JBEM/article/view/9597.