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Orman, A. J. and Williams, H. Paul (2006) A survey of different integer programming formulations of the travelling salesman problem. In: Kontoghiorghes, Erricos John and Gatu, Cristian, (eds.) Optimisation, Econometric and Financial Analysis. Advances in computational management science (9). Springer Berlin / Heidelberg, Berlin, Germany, pp. 93-108. ISBN 9783540366256