First Results About Motivation and Impact of License Changes in Open Source Projects. In: . Open Source Systems: Adoption and Impact [Internet]. Springer International Publishing; 2015. pp. 137-145. http://dx.doi.org/10.1007/978-3-319-17837-0_13 .
Initial Results from the Study of the Open Source Sector in Belgium. In The International SymposiumProceedings of The International Symposium on Open Collaboration - OpenSym '14. Berlin, GermanyNew York, New York, USA: ACM Press; 2014. pp. 1 - 5. .
Identifying Success Factors for the Mozilla Project. . IFIP Advances in Information and Communication Technology Open Source Software: Quality Verification. Berlin, Heidelberg: Springer Berlin Heidelberg; 2013. pp. 45 - 60. .
From Open Source Software to Open Source Hardware. IFIP Advances in Information and Communication Technology 378 (OSS 2012). IFIP AICT, Springer; 2012. pp. 286-291. .