@article{Vierkant2013, author = "Paul Vierkant and Michaela Voigt and Jens Dupski and Sammy David and Mathias Lösch", title = "{2012 Census of Open Access Repositories in Germany}", year = "2013", month = "11", url = "https://figshare.com/articles/dataset/2012_Census_of_Open_Access_Repositories_in_Germany/677099", doi = "10.6084/m9.figshare.677099.v1" }