@article{10_1017_S0017089500031219,
     author = {Miller, T. L. and Miller, V. G.},
     title = {Equality of essential spectra of quasisimilar operators with property (\ensuremath{\delta})},
     journal = {Glasgow mathematical journal},
     pages = {21--28},
     year = {1996},
     volume = {38},
     number = {1},
     doi = {10.1017/S0017089500031219},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500031219/}
}