@article{TSG_2007-2008__26__123_0,
     author = {Roth, Julien},
     title = {Pincement de la premi\`ere valeur propre du laplacien pour les hypersurfaces et rigidit\'e},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {123--138},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {26},
     year = {2007-2008},
     doi = {10.5802/tsg.263},
     zbl = {1187.58010},
     mrnumber = {2654600},
     language = {fr},
     url = {http://www.numdam.org/articles/10.5802/tsg.263/}
}