Minorations sur le λ 1 des variétés riemanniennes
Séminaire Bourbaki : vol. 1980/81, exposés 561-578, Séminaire Bourbaki, no. 23 (1981), Exposé no. 569, 17 p. 
@incollection{SB_1980-1981__23__132_0,
     author = {Gallot, Sylvestre},
     title = {Minorations sur le <span class="mathjax-formula">$\lambda \_1$</span> des vari\'et\'es riemanniennes},
     booktitle = {S\'eminaire Bourbaki : vol. 1980/81, expos\'es 561-578},
     author = {Collectif},
     series = {S\'eminaire Bourbaki},
     note = {talk:569},
     publisher = {Springer-Verlag},
     number = {23},
     year = {1981},
     zbl = {0493.53034},
     language = {fr},
     url = {www.numdam.org/item/SB_1980-1981__23__132_0/}
}
Gallot, Sylvestre. Minorations sur le $\lambda _1$ des variétés riemanniennes, dans Séminaire Bourbaki : vol. 1980/81, exposés 561-578, Séminaire Bourbaki, no. 23 (1981), Exposé no. 569, 17 p. http://www.numdam.org/item/SB_1980-1981__23__132_0/

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