@article{AIF_1986__36_4_157_0,
     author = {Wallet, Guy},
     title = {Entr\'ee-sortie dans un tourbillon},
     journal = {Annales de l'Institut Fourier},
     pages = {157--184},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {36},
     number = {4},
     year = {1986},
     doi = {10.5802/aif.1072},
     mrnumber = {88h:34032},
     zbl = {0593.76032},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.5802/aif.1072/}
}