Martins, J. de S., & Coelho, A. F. M. (2015). ARE THE FINANCIAL SERVICES’ CUSTOMERS TRULY LOYAL? AN INVESTIGATION IN THE PORTUGUESE PRIVATE BANKING SECTOR. Revista Gestão Em Análise, 4(1), 89–109. https://doi.org/10.12662/2359-618xregea.v4i1.p89-109.2015