An extension of Pizzetti's formula to riemmanian manifolds
Analyse sur les variétés (Metz, 1979), Astérisque, no. 80 (1980), 4 p.
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     author = {Willmore, T. J.},
     title = {An extension of {Pizzetti's} formula to riemmanian manifolds},
     booktitle = {Analyse sur les vari\'et\'es (Metz, 1979)},
     author = {Collectif},
     series = {Ast\'erisque},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {80},
     year = {1980},
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Willmore, T. J. An extension of Pizzetti's formula to riemmanian manifolds, dans Analyse sur les variétés (Metz, 1979), Astérisque, no. 80 (1980), 4 p. http://archive.numdam.org/item/AST_1980__80__53_0/

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