@incollection{SB_1971-1972__14__295_0,
     author = {Robert, Alain},
     title = {Formes automorphes sur $GL_2$},
     booktitle = {S\'eminaire Bourbaki : vol. 1971/72, expos\'es 400-417},
     series = {S\'eminaire Bourbaki},
     note = {talk:415},
     pages = {295--318},
     publisher = {Springer-Verlag},
     number = {14},
     year = {1973},
     mrnumber = {424697},
     zbl = {0254.10022},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1971-1972__14__295_0/}
}