Joseph, H. and Sumaya, . K. M. . (2017) “Role of qualitative research in preventing customer churn: a case study of mobile network operators in Kenya”, Operations Research Society of Eastern Africa, 7(2), pp. 13-27. Available at: https://orseajournal.udsm.ac.tz/index.php/orsea/article/view/63 (Accessed: 23November2024).