@article{GDZPPN00230905X, title = {Spectral Theory for A (X).}, journal = {Mathematische Annalen}, volume = {212}, year = {1974}, pages = {67-86}, zbl = {0254.46019}, url = {http://dml.mathdoc.fr/item/GDZPPN00230905X} }
Edwards, C.M. Spectral Theory for A (X).. Mathematische Annalen, Tome 212 (1974) pp. 67-86. http://gdmltest.u-ga.fr/item/GDZPPN00230905X/