A. Blum, T. Chan, и M. Rwebangira. Proceedings of the eigth Workshop on Algorithm Engineering and Experiments and the third Workshop on Analytic Algorithmics and Combinatorics, стр. 238--246. (2006)
P. Chebolu, и P. Melsted. Proceedings of the nineteenth annual ACM-SIAM symposium on Discrete algorithms, стр. 1010--1018. Society for Industrial and Applied Mathematics, (2008)