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@article{MAN_1974__208_162567, author = {Harm Bart}, title = {Holomorphic {Relative} {Inverses} of {Operator} {Valued} {Functions.}}, journal = {Mathematische Annalen}, pages = {179--194}, publisher = {mathdoc}, volume = {208}, year = {1974}, zbl = {0265.47028}, url = {http://geodesic.mathdoc.fr/item/MAN_1974__208_162567/} }
Harm Bart. Holomorphic Relative Inverses of Operator Valued Functions.. Mathematische Annalen, Tome 208 (1974), pp. 179-194. http://geodesic.mathdoc.fr/item/MAN_1974__208_162567/