@article{03817751,
title = {Finiteness of spectra of graphs obtained by some operations on infinite graphs.},
journal = {Publications de l'Institut Math\'ematique. Nouvelle S\'erie},
volume = {33(47)},
year = {1983},
pages = {227-234},
zbl = {0517.05050},
language = {en},
url = {http://dml.mathdoc.fr/item/03817751}
}
Torgasev, Aleksandar. Finiteness of spectra of graphs obtained by some operations on infinite graphs.. Publications de l'Institut Mathématique. Nouvelle Série, Tome 33(47) (1983) pp. 227-234. http://gdmltest.u-ga.fr/item/03817751/