Publications
. (1985). Comment on Vitalari. Research methods in information systems. Elsevier Publishers.
. (2003). Organizational and National Issues of an ERP Implementation in a Portuguese Company. Information Systems Perspectives and Challenges in the Context of Globalization.
. (2001). Thoughts on Studying Open Source Software Communities. Realigning Research and Practice in Information Systems Development.
. (2003). Open Source and Free Software: Organizational and Societal Implications. Information Systems Perspectives and Challenges in the Context of Globalization.
. (2006). Developing Open Source Software: A Community-Based Analysis of Research. Social Inclusion: Societal and Organizational Implications for Information Systems. doi:10.1007/0-387-34588-4_18
. (2008). Bazaar by Design: Managing Interfirm Exchanges in an Open Source Service Network. Information Technology in the Service Economy: Challenges and Possibilities for the 21st Century. presented at the 2008. Retrieved from http://dx.doi.org/10.1007/978-0-387-09768-8_12
. (2008). The Servicitization of Peer Production: Reflections on the Open Source Software Experience. Information Technology in the Service Economy: Challenges and Possibilities for the 21st Century. presented at the 2008. Retrieved from http://dx.doi.org/10.1007/978-0-387-09768-8_27
. (1993). Boiling the Frog or Seducing the Fox: Organizational Aspects of Implementing CASE Technology. Human, Organizational, and Social Dimensions of Information Systems Development.
. (1993). Approaches to the Development of Executive Information Systems and the Contrast with Traditional Systems Development. Human, Organizational, and Social Dimensions of Information Systems Development.
. (1985). Information Systems Research Methodology: An Introduction to the Debate. Research methods in information systems. Elsevier Publishers.
. (1985). Two Research Methodologies for Studying User Development of Data Systems. Research methods in information systems. Elsevier Publishers.
. (2004). The Use of Social Theories in 20 Years of WG 8.2 Empirical Research. Information Systems Research. presented at the 2004. Retrieved from http://dx.doi.org/10.1007/1-4020-8095-6_21
. (1993). A Study of End-Users' Behavior by Means of an Automated Assessment Method (or a Behavior Typology of End-Users). Human, Organizational, and Social Dimensions of Information Systems Development.
. (2008). Virtuality and Non-Virtuality in Remote Stock Trading. Information Technology in the Service Economy: Challenges and Possibilities for the 21st Century. presented at the 2008///. Retrieved from http://dx.doi.org/10.1007/978-0-387-09768-8_11
. (2008). Virtuality and Non-Virtuality in Remote Stock Trading. Information Technology in the Service Economy: Challenges and Possibilities for the 21st Century. presented at the 2008. Retrieved from http://dx.doi.org/10.1007/978-0-387-09768-8_11
. (2012). Grounded Analytic Research: Building Theory from a Body of Research. ()Shaping the Future of ICT Research. Methods and Approaches. Springer Berlin Heidelberg. doi:10.1007/978-3-642-35142-6_5
. (1985). In Search of a Paradigm for Information Systems Research. Research methods in information systems. Elsevier Publishers.
. (2001). Knowledge Management Systems: Hype, Hope, or Folly?. Realigning Research and Practice in Information Systems Development.
. (2002). An Anatomy of European Information Systems Research ECIS 1993-ECIS 2002: Some Initial Findings. ()10th European Conference on Information Systems,. Gdansk, Poland. Retrieved from ECIS2002.pdf
. (2007). Vive les differences?. European Journal of Information Systems, 16, 20-35. Retrieved from EJIS2007.pdf
. (2007). The European Information Systems Academy. European Journal of Information Systems, 16, 3-4. Retrieved from EJIS2007Editorial.pdf
. (1997). Value in triangulation: a comparison of two approaches for combining qualitative and quantitative methods. Proceedings of the IFIP TC8 WG 8.2 international conference on Information systems and qualitative research. Philadelphia, PA, USA: Chapman & Hall, Ltd.
. (1997). Qualitative research in information systems: time to be subjective?. Proceedings of the IFIP TC8 WG 8.2 international conference on Information systems and qualitative research. Philadelphia, PA, USA: Chapman & Hall, Ltd.
. (2011). Sensors, empowerment, and accountability: a Digital Earth view from East Africa. International Journal of Digital Earth, 4, 285–304.
. (2009). A bigger picture: information systems and spatial data infrastructure research perspectives. In Global Spatial Data Infrastructure 11 World Conference: SDI Convergence: Building SDI Bridges to Address Global Challenges, Rotterdam, The Netherlands, 15-19 June, 2009.