@article{CM_1973__26_2_129_0,
     author = {Berger, M.},
     title = {Sur les premi\`eres valeurs propres des vari\'et\'es riemanniennes},
     journal = {Compositio Mathematica},
     pages = {129--149},
     publisher = {Noordhoff International Publishing},
     volume = {26},
     number = {2},
     year = {1973},
     mrnumber = {316913},
     zbl = {0257.53048},
     language = {fr},
     url = {http://www.numdam.org/item/CM_1973__26_2_129_0/}
}