@incollection{SB_1977-1978__20__300_0,
     author = {Sergeraert, Francis},
     title = {
              $B\Gamma $
            },
     booktitle = {S\'eminaire Bourbaki : vol. 1977/78, expos\'es 507-524},
     series = {S\'eminaire Bourbaki},
     note = {talk:524},
     pages = {300--315},
     publisher = {Springer-Verlag},
     number = {20},
     year = {1979},
     zbl = {0434.57020},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1977-1978__20__300_0/}
}