N. Weber, T. Nelkner, K. Schoefegger, and S. Lindstaedt. Proceedings of the Third International Workshop on Mashup Personal Learning Environments (MUPPLE09), in conjunction with the 5th European Conference on Technology Enhanced Learning (EC-TEL2010), Barcelona, Spain, (September 2010)
K. Schoefegger, N. Weber, S. Lindstaedt, and T. Ley. Proceedings of Knowledge Science, Engineering and Management (KSEM), LNAI 5914, page 370 - 381. Springer-Verlag Berlin Heidelberg, (2009)
S. Braun, and A. Schmidt. 8th International Conference on the Design of Cooperative Systems (COOP '08), Carry-le-Rouet, France, May 20-23, 2008, (2008)