D. Huynh, D. Karger, и R. Miller. Proceedings of the 16th international conference on World Wide Web, стр. 737--746. Banff, Alberta, Canada, ACM, (2007)
C. Martınez. Proc. 6th ACMSIAM Workshop on Algorithm Engineering and Experiments and 1st ACM-SIAM Workshop on Analytic Algorithmics and Combinatorics, стр. 224--228. (2004)
K. Batcher. AFIPS Spring Joint Computing Conference, том 32 из AFIPS Conference Proceedings, стр. 307-314. Thomson Book Company, Washington D.C., (1968)