Μπλέρη Ε, Μιχαλακοπούλου Μ. CRM (customer relationship management) applications in the Greek mobile telephony companies: a comparative analysis. SPOUDAI [Internet]. 2006 Aug. 14 [cited 2024 Sep. 20];56(3):71-94. Available from: http://spoudai.org/index.php/journal/article/view/375