@incollection{SB_1984-1985__27__19_0,
     author = {Bennequin, Daniel},
     title = {Caustique mystique},
     booktitle = {S\'eminaire Bourbaki : volume 1984/85, expos\'es 633-650},
     series = {Ast\'erisque},
     note = {talk:634},
     pages = {19--56},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {133-134},
     year = {1986},
     mrnumber = {837213},
     zbl = {0632.58011},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1984-1985__27__19_0/}
}