@incollection{SB_1978-1979__21__151_0,
     author = {M\'ela, Jean-Fran\c{c}ois},
     title = {Le calcul sur les caract\`eres de l{\textquoteright}alg\`ebre $M(G)$ et le probl\`eme {\guillemotleft} $\mu * L^1$ ferm\'e ? {\guillemotright}},
     booktitle = {S\'eminaire Bourbaki : vol. 1978/79, expos\'es 525-542},
     series = {S\'eminaire Bourbaki},
     note = {talk:534},
     pages = {151--169},
     publisher = {Springer-Verlag},
     number = {21},
     year = {1980},
     zbl = {0432.43003},
     language = {fr},
     url = {http://archive.numdam.org/item/SB_1978-1979__21__151_0/}
}