@incollection{AST_1983__98-99__216_0,
     author = {Moussu, R.},
     title = {Une d\'emonstration g\'eom\'etrique d'un th\'eor\`eme de {Lyapunov-Poincar\'e}},
     booktitle = {Bifurcation, th\'eorie ergodique et applications - 22-26 juin 1981},
     series = {Ast\'erisque},
     pages = {216--223},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {98-99},
     year = {1982},
     mrnumber = {724449},
     zbl = {0523.34039},
     language = {fr},
     url = {http://archive.numdam.org/item/AST_1983__98-99__216_0/}
}