Customer Relationship Management Systems Research: Voids in the Current Literature. - Kristel Paulissen; Koen Milis; Malaika Brengman (AMCIS, 2005)

Voids in the Current CRM Literature: Academic Literature Review and Classification (2000-2005). - Kristel Paulissen; Koen Milis; Malaika Brengman; Jerry Fjermestad; Nicholas C. Romano Jr. (HICSS, 2007)