@article{GDZPPN002068184, title = {Convexit\'e en topologie de contact.}, journal = {Commentarii mathematici Helvetici}, volume = {66}, year = {1991}, pages = {637-677}, zbl = {0766.53028}, url = {http://dml.mathdoc.fr/item/GDZPPN002068184} }
Giroux, E. Convexité en topologie de contact.. Commentarii mathematici Helvetici, Tome 66 (1991) pp. 637-677. http://gdmltest.u-ga.fr/item/GDZPPN002068184/