@article{RCP25_1990__41__143_0,
     author = {Moussu, R.},
     title = {Probl\`eme de {Dulac} et vari\'et\'es pfaffiennes},
     journal = {Les rencontres physiciens-math\'ematiciens de Strasbourg -RCP25},
     note = {talk:4},
     pages = {143--149},
     publisher = {Institut de Recherche Math\'ematique Avanc\'ee - Universit\'e Louis Pasteur},
     volume = {41},
     year = {1990},
     language = {fr},
     url = {http://www.numdam.org/item/RCP25_1990__41__143_0/}
}