@incollection{SB_1961-1962__7__302_1,
     author = {Grothendieck, Alexander},
     title = {Erratum \`a l'expos\'e n{\textdegree}221},
     booktitle = {S\'eminaire Bourbaki : ann\'ee 1961/62, expos\'es 223-240},
     series = {S\'eminaire Bourbaki},
     eid = {24},
     pages = {302--302},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {7},
     year = {1962},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1961-1962__7__302_1/}
}