Case Study: M-Commerce at Helsana Health Insurance: Mobile Premium Calculator. - Annette Reichold; Ragnar Schierholz; Lutz M. Kolbe; Walter Brenner (DEXA Workshops, 2003)

Architecture for Customer Relationship Management Approaches in Financial Services. - Malte Geib; Annette Reichold; Lutz M. Kolbe; Walter Brenner (HICSS, 2005)