@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/} }