@inproceedings{HofmannRiehleKolassaetal., author = {Hofmann, Gottfried and Riehle, Dirk and Kolassa, Carsten and Mauerer, Wolfgang}, title = {A Dual Model of Open Source License Growth}, series = {Open Source Software: Quality Verification : 9th IFIP WG 2.13 International Conference, OSS 2013, Koper-Capodistria, Slovenia, June 25-28, 2013, Proceedings}, volume = {404}, booktitle = {Open Source Software: Quality Verification : 9th IFIP WG 2.13 International Conference, OSS 2013, Koper-Capodistria, Slovenia, June 25-28, 2013, Proceedings}, publisher = {Springer}, address = {Berlin}, doi = {10.1007/978-3-642-38928-3_18}, pages = {245 -- 256}, abstract = {Every open source project needs to decide on an open source license. This decision is of high economic relevance: Just which license is the best one to help the project grow and attract a community? The most common question is: Should the project choose a restrictive (reciprocal) license or a more permissive one? As an important step towards answering this question, this paper analyses actual license choice and correlated project growth from ten years of open source projects. It provides closed analytical models and finds that around 2001 a reversal in license choice occurred from restrictive towards permissive licenses.}, language = {en} }