1. A review of the application of RFM model;Wei;Afr. J. Bus. Manag.,2010
2. Customer Lifetime Value (CLV) Measurement Based on RFM Model;Sohrabi;Iran. Account. Audit. Rev.,2007
3. The One Number You Need to Grow;Reichheld;Harv. Bus. Rev.,2003
4. Past, present and future of contact centers: A literature review;Saberi;Bus. Process Manag. J.,2017
5. Dixon, M., Freeman, K., and Toman, N. (2010). Stop trying to delight your customers. Harv. Bus. Rev., 88.