@incollection{SB_1989-1990__32__285_0,
     author = {Bennequin, Daniel},
     title = {Topologie symplectique, convexit\'e holomorphe et structures de contact},
     booktitle = {S\'eminaire Bourbaki : volume 1989/90, expos\'es 715-729},
     series = {Ast\'erisque},
     note = {talk:725},
     pages = {285--323},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {189-190},
     year = {1990},
     mrnumber = {1099880},
     zbl = {0755.32009},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1989-1990__32__285_0/}
}