2022
More Data Analysis with Citizen Data Scientists?
Proceedings of the Information Systems and Technologies, 2022
2021
Researching Digital Entrepreneurship: Current Issues and Suggestions for Future Directions.
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Commun. Assoc. Inf. Syst., 2021
Patients' Attitudes toward Apps for Management of a Chronic Disease.
Proceedings of the Innovation durch Informationssysteme, 2021
Using 3D-Technology to Support Facial Treatment.
Proceedings of the Information Systems, 2021
2020
Should Data Structures Look Flat for End Users?
Inf. Syst. Manag., 2020
Consequences of the COVID-19 Pandemic for IT Work.
Inf. Syst. Manag., 2020
Effects of search engine advertising on user clicks, conversions, and basket choice.
Electron. Mark., 2020
Antecedents and Consequences of Perceived Fairness in Pay for Crowdwork.
Proceedings of the 41st International Conference on Information Systems, 2020
2019
Outsourcing and Offshoring to Individuals.
Proceedings of the Digital Technologies for Global Sourcing of Services, 2019
Motivation of Physicians to Recommend an App for a Serious disease to patients.
Proceedings of the 27th European Conference on Information Systems, 2019
2018
Contribution and consumption of content in enterprise social media.
Inf. Syst. Manag., 2018
On the relationship between print and mobile channels for newspapers.
Electron. Mark., 2018
Antecedents of Perceived Fairness in Pay for Microtask Crowdwork.
Proceedings of the 26th European Conference on Information Systems: Beyond Digitization, 2018
2017
Does one model fit all? Exploring factors influencing the use of blogs, social networks, and wikis in the enterprise.
J. Organ. Comput. Electron. Commer., 2017
Management of Multi-cloud Computing.
Proceedings of the Global Sourcing of Digital Services: Micro and Macro Perspectives, 2017
2016
Self-Service Business Intelligence.
Bus. Inf. Syst. Eng., 2016
Offshoring in the Wrong Direction?
Proceedings of the Shared Services and Outsourcing: A Contemporary Outlook, 2016
Can Mobile Apps Defend Print Media?
Proceedings of the 24th European Conference on Information Systems, 2016
2015
Influence of social software features on the reuse of Business Intelligence reports.
Inf. Process. Manag., 2015
Information Technology Outsourcing and the Bottom Line.
Proceedings of the Achieving Success and Innovation in Global Sourcing: Perspectives and Practices, 2015
Initial and Continued Knowledge Contribution on Enterprise Social Media Platforms.
Proceedings of the 23rd European Conference on Information Systems, 2015
2014
Assessment of data quality in accounting data with association rules.
Expert Syst. Appl., 2014
When Does Brand Bidding Pay Off (Even) If Website Competition is Low?
Proceedings of the International Conference on Information Systems, 2014
The Impact of Big Data on the epistemological Dicourse in Information Systems Research.
Proceedings of the 22st European Conference on Information Systems, 2014
2010
Integration of Internet Users in Innovation Processes.
Proceedings of the 5th Mediterranean Conference on Information Systems, 2010
2009
Customization of Open Source Software in Companies.
Proceedings of the Open Source Ecosystems: Diverse Communities Interacting, 2009
Do best practice frameworks fit open source software customization?
Proceedings of the 17th European Conference on Information Systems, 2009
Improving Database Retrieval on the Web through Query Relaxation.
Proceedings of the Business Information Systems Workshops, 2009
2007
Productivity of internet shops.
Int. J. Electron. Bus., 2007
Support of Harmonisation of Public Processes - Through Modelling of Legal Constraints.
Proceedings of the eOrganisation: Service-, Prozess-, Market-Engineering: 8. Internationale Tagung Wirtschaftsinformatik, 2007
2005
e-Government at Community Level - An Empirical Investigation in the State of Hesse, Germany.
Proceedings of the 5th European Conference on e-Government University of Antwerp, 2005
2004
What Data Is Necessary to Data Mine for Knowledge?
Proceedings of the Fourth International Conference on Electronic Business, 2004
2003
Ein Vergleich ausgewählter Klassifikationsverfahren im Kontext von Finanzdienstleistungen.
Proceedings of the Wirtschaftsinformatik 2003, Medien - Märkte - Mobilität, Band II, 2003
2002
Die kritischen Erfolgsfaktoren für EDI-Dienstleistungsanbieter.
Wirtschaftsinf., 2002
2001
Measuring the Efficiency of Web Site Traffic Generation.
Int. J. Electron. Commer., 2001
Inter-organisational knowledge management with internet applications.
Proceedings of the 9th European Conference on Information Systems, 2001
2000
Einführung zu Data Mining.
Proceedings of the Data Mining im praktischen Einsatz, 2000
1999
Satisfaction with a Web-Site: Its Measurement, Factors and Correlates.
Proceedings of the Electronic Business Engineering, 1999
1998
Kommerzielle Nutzung des Internet - Unterstützung von Marketing, Produktion, Logistik und Querschnittsfunktionen durch Internet, Intranet und kommerzielle Online-Dienste (2. Aufl.).
Springer, ISBN: 978-3-540-64449-1, 1998
1995
Outsourcing information system functions: An organization economics perspective.
J. Organ. Comput., 1995
Market share analysis and prognosis using qualitative reasoning.
Decis. Support Syst., 1995
1991
Major IS concerns of entrepreneurial organizations.
Inf. Manag., 1991
1990
A Microeconomic Approach to the Measurement of Information Technology Value.
J. Manag. Inf. Syst., 1990
1983
Interactive Support for Method-Oriented Data Exploration (ISMODE).
Angew. Inform., 1983
1980
Computergestützte interaktive Methodenauswahl.
PhD thesis, 1980