E. Yeh, D. Ramage, C. Manning, E. Agirre, and A. Soroa. Proceedings of the 2009 Workshop on Graph-based Methods for Natural Language Processing, page 41--49. Stroudsburg, PA, USA, Association for Computational Linguistics, (2009)
A. Blum, T. Chan, and M. Rwebangira. Proceedings of the eigth Workshop on Algorithm Engineering and Experiments and the third Workshop on Analytic Algorithmics and Combinatorics, page 238--246. (2006)
P. Chebolu, and P. Melsted. Proceedings of the nineteenth annual ACM-SIAM symposium on Discrete algorithms, page 1010--1018. Society for Industrial and Applied Mathematics, (2008)