C. Schmitz, S. Staab, R. Studer, G. Stummen, и J. Tane. Proc. of E-Learning 2002 World Conference on E-Learning in Corporate, Government, Healthcare and Higher Education on (E-Learning 2002), AACE, стр. 909-915. Norfolk, (2002)Awarded paper.
M. Ehrig, J. Hartmann, и C. Schmitz. Workshop ``Semantische Technologien für Informationsportale'' (GI-Jahrestagung 2004), Gesellschaft für Informatik, (сентября 2004)
C. Schmitz, S. Staab, R. Studer, G. Stumme, и J. Tane. Proc. of E-Learning 2002 World Conference on E-Learning in Corporate, Government, Healthcare and Higher Education on (E-Learning 2002), AACE, стр. 909-915. Norfolk, (2002)Awarded paper.