@article{05038302, title = {An extension of the topological degree in Hilbert space.}, journal = {Abstract and Applied Analysis}, volume = {2005}, year = {2005}, pages = {581-597}, doi = {10.1155/AAA.2005.581}, zbl = {1117.47048}, language = {en}, url = {http://dml.mathdoc.fr/item/05038302} }
Berkovits, J.; Fabry, C. An extension of the topological degree in Hilbert space.. Abstract and Applied Analysis, Tome 2005 (2005) pp. 581-597. doi : 10.1155/AAA.2005.581. http://gdmltest.u-ga.fr/item/05038302/