@article{10_4153_CJM_1981_091_4,
     author = {Fialkow, Lawrence A.},
     title = {Elements of {Spectral} {Theory} for {Generalized} {Derivations} {II} : {The} {Semifredholm} {Domain}},
     journal = {Canadian journal of mathematics},
     pages = {1205--1231},
     year = {1981},
     volume = {33},
     number = {5},
     doi = {10.4153/CJM-1981-091-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-091-4/}
}