@INPROCEEDINGS{DiPenta10-ICSE-SoftwareLicensingEvolution,
   AUTHOR       = {Di Penta, Massimiliano and Daniel M. German and 
      Yann-Ga�l Gu�h�neuc and Giuliano Antoniol},
   BOOKTITLE    = {Proceedings of the 32<sup>nd</sup> International Conference on Software Engineering (ICSE)},
   TITLE        = {An Exploratory Study of the Evolution of Software 
      Licensing},
   YEAR         = {2010},
   OPTADDRESS   = {},
   OPTCROSSREF  = {},
   EDITOR       = {Prem Devanbu and Sebastian Uchitel},
   MONTH        = {May},
   NOTE         = {10 pages.},
   OPTNUMBER    = {},
   OPTORGANIZATION = {},
   PAGES        = {145--154},
   PUBLISHER    = {ACM Press},
   OPTSERIES    = {},
   OPTVOLUME    = {},
   KEYWORDS     = {Topic: <b>Evolution patterns</b>, Venue: <c>ICSE</c>},
   URL          = {http://www.ptidej.net/publications/documents/ICSE10a.doc.pdf},
   PDF          = {http://www.ptidej.net/publications/documents/ICSE10a.ppt.pdf},
   ABSTRACT     = {ree and open source software systems (FOSS) are 
      distributed and made available to users under different software 
      licenses, mentioned in FOSS code by means of licensing statements. 
      Various factors, such as changes in the legal landscape, commercial 
      code licensed as FOSS, or code reused from other FOSS systems, lead 
      to evolution of licensing, which may affect the way a system or part 
      thereof can be subsequently used. Therefore, it is crucial to monitor 
      licensing evolution. However, manually tracking the licensing 
      evolution of thousands of files is a daunting task. After presenting 
      several cases of the effects of licensing evolution, we argue that 
      developers and system integrators must monitor licensing evolution 
      and they need an automatic approach due to the sheer size of FOSS 
      systems. We propose an approach to automatically track changes 
      occurring in the licensing terms of a system and report an empirical 
      study of the licensing evolution of six different FOSS systems. 
      Results show that licensing underwent frequent and substantial 
      changes.}
}

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M.","Gu�h�neuc, Y.","Antoniol, G."],"year":2010,"bibtype":"inproceedings","biburl":"http://www.yann-gael.gueheneuc.net/Work/Publications/Biblio/complete-bibliography.bib","bibdata":{"bibtype":"inproceedings","type":"inproceedings","author":[{"propositions":[],"lastnames":["Di","Penta"],"firstnames":["Massimiliano"],"suffixes":[]},{"firstnames":["Daniel","M."],"propositions":[],"lastnames":["German"],"suffixes":[]},{"firstnames":["Yann-Ga�l"],"propositions":[],"lastnames":["Gu�h�neuc"],"suffixes":[]},{"firstnames":["Giuliano"],"propositions":[],"lastnames":["Antoniol"],"suffixes":[]}],"booktitle":"Proceedings of the 32^nd International Conference on Software Engineering (ICSE)","title":"An Exploratory Study of the Evolution of Software Licensing","year":"2010","optaddress":"","optcrossref":"","editor":[{"firstnames":["Prem"],"propositions":[],"lastnames":["Devanbu"],"suffixes":[]},{"firstnames":["Sebastian"],"propositions":[],"lastnames":["Uchitel"],"suffixes":[]}],"month":"May","note":"10 pages.","optnumber":"","optorganization":"","pages":"145–154","publisher":"ACM Press","optseries":"","optvolume":"","keywords":"Topic: <b>Evolution patterns</b>, Venue: <c>ICSE</c>","url":"http://www.ptidej.net/publications/documents/ICSE10a.doc.pdf","pdf":"http://www.ptidej.net/publications/documents/ICSE10a.ppt.pdf","abstract":"ree and open source software systems (FOSS) are distributed and made available to users under different software licenses, mentioned in FOSS code by means of licensing statements. Various factors, such as changes in the legal landscape, commercial code licensed as FOSS, or code reused from other FOSS systems, lead to evolution of licensing, which may affect the way a system or part thereof can be subsequently used. Therefore, it is crucial to monitor licensing evolution. However, manually tracking the licensing evolution of thousands of files is a daunting task. After presenting several cases of the effects of licensing evolution, we argue that developers and system integrators must monitor licensing evolution and they need an automatic approach due to the sheer size of FOSS systems. We propose an approach to automatically track changes occurring in the licensing terms of a system and report an empirical study of the licensing evolution of six different FOSS systems. Results show that licensing underwent frequent and substantial changes.","bibtex":"@INPROCEEDINGS{DiPenta10-ICSE-SoftwareLicensingEvolution,\r\n AUTHOR = {Di Penta, Massimiliano and Daniel M. German and \r\n Yann-Ga�l Gu�h�neuc and Giuliano Antoniol},\r\n BOOKTITLE = {Proceedings of the 32^nd International Conference on Software Engineering (ICSE)},\r\n TITLE = {An Exploratory Study of the Evolution of Software \r\n Licensing},\r\n YEAR = {2010},\r\n OPTADDRESS = {},\r\n OPTCROSSREF = {},\r\n EDITOR = {Prem Devanbu and Sebastian Uchitel},\r\n MONTH = {May},\r\n NOTE = {10 pages.},\r\n OPTNUMBER = {},\r\n OPTORGANIZATION = {},\r\n PAGES = {145--154},\r\n PUBLISHER = {ACM Press},\r\n OPTSERIES = {},\r\n OPTVOLUME = {},\r\n KEYWORDS = {Topic: <b>Evolution patterns</b>, Venue: <c>ICSE</c>},\r\n URL = {http://www.ptidej.net/publications/documents/ICSE10a.doc.pdf},\r\n PDF = {http://www.ptidej.net/publications/documents/ICSE10a.ppt.pdf},\r\n ABSTRACT = {ree and open source software systems (FOSS) are \r\n distributed and made available to users under different software \r\n licenses, mentioned in FOSS code by means of licensing statements. \r\n Various factors, such as changes in the legal landscape, commercial \r\n code licensed as FOSS, or code reused from other FOSS systems, lead \r\n to evolution of licensing, which may affect the way a system or part \r\n thereof can be subsequently used. Therefore, it is crucial to monitor \r\n licensing evolution. However, manually tracking the licensing \r\n evolution of thousands of files is a daunting task. After presenting \r\n several cases of the effects of licensing evolution, we argue that \r\n developers and system integrators must monitor licensing evolution \r\n and they need an automatic approach due to the sheer size of FOSS \r\n systems. We propose an approach to automatically track changes \r\n occurring in the licensing terms of a system and report an empirical \r\n study of the licensing evolution of six different FOSS systems. \r\n Results show that licensing underwent frequent and substantial \r\n changes.}\r\n}\r\n\r\n","author_short":["Di Penta, M.","German, D. 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