Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1971__46_139481, author = {Esther Portnoy}, title = {Toward a {Generalized} {Gauss-Bonnet} {Formula} for {Complete,} {Open} {Manifolds}}, journal = {Commentarii mathematici Helvetici}, pages = {324--344}, publisher = {mathdoc}, volume = {46}, year = {1971}, zbl = {0223.53041}, url = {http://geodesic.mathdoc.fr/item/CMH_1971__46_139481/} }
Esther Portnoy. Toward a Generalized Gauss-Bonnet Formula for Complete, Open Manifolds. Commentarii mathematici Helvetici, Tome 46 (1971), pp. 324-344. http://geodesic.mathdoc.fr/item/CMH_1971__46_139481/