N. Shinagawa, T. Nagai, H. Kitagawa, and Y. Ishikawa : "Querying Geographic Data in XML via eXtensible XML Query Language X^2QL", Proc. International Symposium on Asia GIS 2001, Tokyo, Japan, June 2001
N. Shinagawa, K. Kuragaki, and H. Kitagawa : "Integration of WWW Applications Based on Extensible XML Query and Processing Languages", Proc. 12th International Conference on Database and Expert System Applications (DEXA 2001)pp. 632-645, Munich, Germany, September 2001
N. Shinagawa and H. Kitagawa : "Extension Mechanism in Extensible XML Query Language X^2QL", Proc. 2nd International Conference on Web Information Systems Engineering (WISE 2001), Vol. 1, pp. 183-192, Kyoto, Japan, December 2001
A. Morishima and H. Kitagawa : "Design and Evaluation of an Example-based Graphical Manipulation Framework for XML", Proc. 2nd International Conference on Web Information Systems Engineering (WISE 2001), Vol. 1, pp. 222-231, Kyoto, Japan, December 2001
A. Morishima, S. Koizumi, H. Kitagawa, and S. Takano : "Enabling End-users to Construct Data-intensive Web-sites from XML Repositories: An Example-based Approach (demo)", Proc. 27th International Conference on Very Large Databases (VLDB 2001), pp. 703-704, Roma, Italy, September 2001
A. Morishima, T. Mouri, and H. Kitagawa : "An Example-based Web-site Construction Tool and Its Implementation", Proc. IASTED International Conference on Information Systems and Databases (ISDB 2002), pp. 136-141, Tokyo, Japan, September 2002
Y. Ishikawa, T. Nagai, and H. Kitagawa : "Transforming XPath Queries for Bottom-Up Query Processing", Proc. IASTED International Conference on Information Systems and Databases (ISDB 2002), pp. 210-215, Tokyo, Japan, Sept. 2002
Y. Ishikawa, J. Kawada, and H. Kitagawa : "Processing XML View Queries Including User-defined Foreign Functions on Relational Databases", Proc. 3rd International Conference on Web Information Systems Engineering (WISE 2002), pp. 225-236, Singapore, December 2002
A. Morishima, H. Kitagawa, and A. Matsumoto : "A Machine Learning Approach to Rapid Development of XML Mapping Queries", Proc. 20th IEEE International Conference on Data Engineering (ICDE 2004), pp. 276-287, Boston, MA, March 2004
T. Mouri and H. Kitagawa : "Extracting New Topic Contents from Hidden Web Sites", Proc. IEEE International Conference on Information Technology (ITCC 2004), pp. 314-319, Las Vegas, NV, April 2004
N. Shinagawa and H. Kitagawa : "Constructing XML Views over Binary Data (poster)", Proc. 8th International Database Engineering and Applications Symposium (IDEAS'04), pp. 470-474, Coimbra, Portugal, July 2004
K. Fujimoto, T. Shimizu, D. D. Kha, M. Yoshikawa and T. Amagasa : "A Mapping Scheme of XML Documents into Relational Databases using Schema-based Path Identifiers", International Workshop on Challenges in Web Information Retrieval and Integration (WIRI 2005), Tokyo, Japan, April 2005