@article{10_4153_CJM_1985_066_3,
     author = {Hile, G. N. and Pfaffenberger, W. E.},
     title = {Generalized {Spectral} {Theory} in {Complex} {Banach} {Algebras}},
     journal = {Canadian journal of mathematics},
     pages = {1211--1236},
     year = {1985},
     volume = {37},
     number = {6},
     doi = {10.4153/CJM-1985-066-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1985-066-3/}
}