H. Lang, G. Wohlgenannt, and A. Weichselbraun. International Conference on Information Resources Management (Conf-IRM), Vienna, Austria, AIS, (2012)Forthcoming (accepted 6 February 2012).
K. Staykova, and G. Agre. Proceedings of the 13th International Conference on Computer Systems and Technologies, page 64--71. New York, NY, USA, ACM, (2012)