Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1970__116_171387, author = {Udo Simon and Wolfgang Wendland}, title = {Zur {Indexmethode} in der {Differentialgeometrie} im {Gro{\ss}en.}}, journal = {Mathematische Zeitschrift}, pages = {242--246}, publisher = {mathdoc}, volume = {116}, year = {1970}, zbl = {0191.20001}, url = {http://geodesic.mathdoc.fr/item/MZ_1970__116_171387/} }
Udo Simon; Wolfgang Wendland. Zur Indexmethode in der Differentialgeometrie im Großen.. Mathematische Zeitschrift, Tome 116 (1970), pp. 242-246. http://geodesic.mathdoc.fr/item/MZ_1970__116_171387/