S. Sekine, K. Sudo, and C. Nobata. Proceedings of $3^rd$ International Conference on Language Resources and Evaluation (LREC'02), page 1818--1824. Canary Islands, Spain, (May 2002)
M. Hearst. Proc. of the Fourteenth Conference on Computational Linguistics,
Nantes, France, page 539--545. Morristown, NJ, USA, Association for Computational Linguistics, (July 1992)
N. Collier, C. Nobata, and J. ichi Tsujii. Proceedings of the 18th conference on Computational linguistics, page 201--207. Morristown, NJ, USA, Association for Computational Linguistics, (2000)
O. Bousquet, S. Boucheron, and G. Lugosi. Advanced Lectures on Machine Learning, volume 3176 of Lecture Notes in Computer Science, page 169-207. Springer, (2003)