@article{1102978059,
author = {Neuberger, J. W.},
title = {Existence of a spectrum for nonlinear transformations.},
journal = {Pacific J. Math.},
volume = {31},
number = {3},
year = {1969},
pages = { 157-159},
language = {en},
url = {http://dml.mathdoc.fr/item/1102978059}
}
Neuberger, J. W. Existence of a spectrum for nonlinear transformations.. Pacific J. Math., Tome 31 (1969) no. 3, pp. 157-159. http://gdmltest.u-ga.fr/item/1102978059/