Ekwueme, Godspower Onyekachukwu, Harold Chukwuemeka Godwin, Chukwu Callistus Nkemjika, and Ifeyinwa Faith Ogbodo. “Behavioural Segmentation and Loyalty Determinants in Automotive Services: A Data-Driven Analysis Using K-Means and XGBoost”. Greenation International Journal of Engineering Science 3, no. 3 (November 3, 2025): 117–132. Accessed January 20, 2026. https://research.e-greenation.org/GIJES/article/view/555.