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

Customer Knowledge Management - Improving Performance of Customer Relationship Management with Knowledge Management. - Adrian Büren; Ragnar Schierholz; Lutz M. Kolbe; Walter Brenner (HICSS, 2004)

Proposition of an M-Business Procedure Model for the Development of Mobile User Interfaces. - Susanne Glissmann; Stefan Smolnik; Ragnar Schierholz; Lutz M. Kolbe; Walter Brenner (ICMB, 2005)

Performance Measurement of Mobile Marketing in Multi-Channel Environments. - Ragnar Schierholz; Alexander Ostrowski; Susanne Glissmann; Lutz M. Kolbe; Walter Brenner (ICMB, 2005)

Improving performance of customer-processes with knowledge management. - Adrian Büren; Ragnar Schierholz; Lutz M. Kolbe; Walter Brenner (Bus. Process. Manag. J., 2005)

Strategy Alignment of Mobile Solutions in Customer-Oriented Processes. - Ragnar Schierholz; Lutz M. Kolbe; Walter Brenner (Wirtschaftsinf., 2005)

Minitrack Introduction. - Ragnar Schierholz; Lutz M. Kolbe; Nicholas C. Romano Jr.; Jerry Fjermestad (HICSS, 2006)

Mobile Systems for Customer Service Differentiation the Case of Lufthansa. - Ragnar Schierholz; Susanne Glissmann; Lutz M. Kolbe; Walter Brenner (PACIS, 2006)

Information Security in the Extended Enterprise: A Research Agenda. - Scott Dynes; Lutz M. Kolbe; Ragnar Schierholz (AMCIS, 2007)

Success Factors in the Introduction of Standard Software in Core Processes of Banks. - Ragnar Schierholz; Lutz M. Kolbe; Malte Geib; Oliver Kohnke; Walter Brenner (ECIS, 2007)

Mobilizing customer relationship management: A journey from strategy to system design. - Ragnar Schierholz; Lutz M. Kolbe; Walter Brenner (Bus. Process. Manag. J., 2007)

Managing of Information Systems Risks in Extended Enterprises: The Case of Outsourcing. - Bastian Schlaak; Scott Dynes; Lutz M. Kolbe; Ragnar Schierholz (AMCIS, 2008)

Leveraging Determinism in Industrial Control Systems for Advanced Anomaly Detection and Reliable Security Configuration. - Hadeli Hadeli; Ragnar Schierholz; Markus Brändle; Cristian Tuduce (ETFA, 2009)

Securing industrial automation and control systems using application whitelisting. - Sebastian Obermeier 001; Ragnar Schierholz; Ana Hristova (ETFA, 2014)