@article{10_1017_S0017089500003372,
     author = {Nagy, B.},
     title = {On the spectra of prespectral operators},
     journal = {Glasgow mathematical journal},
     pages = {57--61},
     year = {1978},
     volume = {19},
     number = {1},
     doi = {10.1017/S0017089500003372},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500003372/}
}