Voir la notice de l'article provenant de la source Numdam
@article{PMIHES_1979__50__73_0, author = {Williams, Robert F.}, title = {The structure of {Lorenz} attractors}, journal = {Publications Math\'ematiques de l'IH\'ES}, pages = {73--99}, publisher = {Institut des Hautes \'Etudes Scientifiques}, volume = {50}, year = {1979}, mrnumber = {82b:58055b}, zbl = {0484.58021}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PMIHES_1979__50__73_0/} }
Williams, Robert F. The structure of Lorenz attractors. Publications Mathématiques de l'IHÉS, Tome 50 (1979), pp. 73-99. http://geodesic.mathdoc.fr/item/PMIHES_1979__50__73_0/