@article{MZ_1982__179_173157,
     author = {Robin Harte},
     title = {Fredholm {Theory} {Relative} to a {Banach} {Algebra} {Homomorphism.}},
     journal = {Mathematische Zeitschrift},
     pages = {431--436},
     year = {1982},
     volume = {179},
     zbl = {0479.47032},
     url = {http://geodesic.mathdoc.fr/item/MZ_1982__179_173157/}
}