@article{GDZPPN002347474, title = {Quasi-Spectral Theory.}, journal = {Mathematica Scandinavica}, volume = {13}, year = {1963}, pages = {188-198}, zbl = {0146.12605}, url = {http://dml.mathdoc.fr/item/GDZPPN002347474} }
Deal, E.R. Quasi-Spectral Theory.. Mathematica Scandinavica, Tome 13 (1963) pp. 188-198. http://gdmltest.u-ga.fr/item/GDZPPN002347474/