The heat equation in riemannian geometry
Séminaire Bourbaki. : vol. 1973/74, exposés 436-452, Séminaire Bourbaki, no. 16 (1975), Talk no. 436, p. 1-11 
@incollection{SB_1973-1974__16__1_0,
     author = {Atiyah, Michael F.},
     title = {The heat equation in riemannian geometry},
     booktitle = {S\'eminaire Bourbaki. : vol. 1973/74, expos\'es 436-452},
     author = {Collectif},
     series = {S\'eminaire Bourbaki},
     publisher = {Springer-Verlag},
     number = {16},
     year = {1975},
     note = {talk:436},
     pages = {1-11},
     zbl = {0322.58011},
     mrnumber = {431286},
     language = {en},
     url = {http://www.numdam.org/item/SB_1973-1974__16__1_0}
}

Atiyah, M. F. The heat equation in riemannian geometry, in Séminaire Bourbaki. : vol. 1973/74, exposés 436-452, Séminaire Bourbaki, no. 16 (1975), Talk no. 436, pp. 1-11. http://www.numdam.org/item/SB_1973-1974__16__1_0/

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