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@article{CMH_1991__66_4_140253, author = {E. Giroux}, title = {Convexit\'e en topologie de contact.}, journal = {Commentarii mathematici Helvetici}, pages = {637--677}, publisher = {mathdoc}, volume = {66}, number = {4}, year = {1991}, zbl = {0766.53028}, url = {http://geodesic.mathdoc.fr/item/CMH_1991__66_4_140253/} }
E. Giroux. Convexité en topologie de contact.. Commentarii mathematici Helvetici, Tome 66 (1991) no. 4, pp. 637-677. http://geodesic.mathdoc.fr/item/CMH_1991__66_4_140253/