@misc{Friedland2004,
author = {Friedland, Gerald and Knipping, Lars and Rojas, Raùl and Schulte, Joachim and Zick, Christian},
year = {2004},
title = {Evaluationsergebnisse zum Einsatz des E-Kreide Systems im Wintersemester
2003/2004},
howpublished = "http://dx.doi.org/10.17169/refubium-22902",
}