Karl Beecher Cornelia Boldyreff Andrea Capiluppi Stephen Rank Evolutionary Success of Open Source Software: an Investigation into Exogenous Drivers. 2007 8 ECEASST http://eceasst.cs.tu-berlin.de/index.php/eceasst/article/view/113 db/journals/eceasst/eceasst8.html#BeecherBCR07