Lizenzen in freier Wildbahn. Mayr, M. Kartographische Nachrichten, 1:14–21, 2015.
bibtex   
@article{TUW-237850,
    author = {Mayr, Markus},
    title = {Lizenzen in freier Wildbahn},
    journal = {Kartographische Nachrichten},
    year = {2015},
    volume = {1},
    pages = {14--21},
    keywords = {OpenStreetMap, Lizenzmodelle, Volunteered Geographic Information}
}
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