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@article{DCG_1990__5_2_131137, author = {M.B. Dillencourt}, title = {Toughness and {Delaunay} {Triangulations.}}, journal = {Discrete & computational geometry}, pages = {575--602}, publisher = {mathdoc}, volume = {5}, number = {2}, year = {1990}, zbl = {0727.05040}, url = {http://geodesic.mathdoc.fr/item/DCG_1990__5_2_131137/} }
M.B. Dillencourt. Toughness and Delaunay Triangulations.. Discrete & computational geometry, Tome 5 (1990) no. 2, pp. 575-602. http://geodesic.mathdoc.fr/item/DCG_1990__5_2_131137/