W. Liu, и C. Westrup. Information Systems Perspectives and Challenges in the Context of Globalization, том 254 из IFIP Conference Proceedings, стр. 155-168. Kluwer, (2003)
W. Liu, A. Weichselbraun, A. Scharl, и E. Chang. 5th International Conference on Knowledge Management (I-KNOW 2005), стр. 145-153. Graz, Austria, Springer, (2005)