@incollection{SB_1979-1980__22__1_0,
     author = {Deligne, Pierre},
     title = {Le groupe fondamental du compl\'ement d'une courbe plane n'ayant que des points doubles ordinaires est ab\'elien},
     booktitle = {S\'eminaire Bourbaki : vol. 1979/80, expos\'es 543-560},
     series = {S\'eminaire Bourbaki},
     note = {talk:543},
     pages = {1--10},
     publisher = {Springer-Verlag},
     number = {22},
     year = {1981},
     mrnumber = {636513},
     zbl = {0478.14008},
     language = {fr},
     url = {http://archive.numdam.org/item/SB_1979-1980__22__1_0/}
}