D. Muratčehajić and S. M. Loureiro,  "Should I stay or should I go: Key determinants for efficiently retaining a subscribed customer who decided to leave", in 15th Annu. Conf. of the EuroMed Academy of Business, Book proceedings, Demetris Vrontis, Yaakov Weber, Evangelos Tsoukatos, Ed., Palermo, EuroMed Press, 2022, pp. 1247-1249