Social CRM Services in Digital Marketing Agencies: A Preliminary Study on Service Offerings in Germany. - Julio Augusto Nogueira Viana; Maarten van der Zandt; Olaf Reinhold; Rainer Alt (BIS (Workshops), 2019)

Outsourcing of Social CRM Services in German SMEs. - Julio A. N. Viana; Maarten van der Zandt; Olaf Reinhold; Rainer Alt (BIS (Workshops), 2020)