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@article{DCG_1987__2_131026, author = {R.B. Hayward}, title = {A {Lower} {Bound} for the {Optimal} {Crossing-Free} {Hamiltonian} {Cycle} {Problem.}}, journal = {Discrete & computational geometry}, pages = {327--344}, publisher = {mathdoc}, volume = {2}, year = {1987}, zbl = {0623.05037}, url = {http://geodesic.mathdoc.fr/item/DCG_1987__2_131026/} }
R.B. Hayward. A Lower Bound for the Optimal Crossing-Free Hamiltonian Cycle Problem.. Discrete & computational geometry, Tome 2 (1987), pp. 327-344. http://geodesic.mathdoc.fr/item/DCG_1987__2_131026/