P. Cimiano, S. Staab, and J. Tane. Proceedings of the ECML / PKDD Workshop on Adaptive Text Extraction and Mining, page 10-17. Cavtat-Dubrovnik, Croatia, (2003)
V. Zacharias, and S. Braun. Workshop on Social and Collaborative Construction of Structured Knowledge (CKC), 16th International World Wide Web Conference (WWW 2007), (8-12 May 2007)