@incollection{SB_1995-1996__38__273_0,
     author = {Berthelot, Pierre},
     title = {Alt\'erations de vari\'et\'es alg\'ebriques},
     booktitle = {S\'eminaire Bourbaki : volume 1995/96, expos\'es 805-819},
     series = {Ast\'erisque},
     note = {talk:815},
     pages = {273--311},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {241},
     year = {1997},
     mrnumber = {1472543},
     zbl = {0924.14007},
     language = {fr},
     url = {http://archive.numdam.org/item/SB_1995-1996__38__273_0/}
}