TY - JOUR AU - E.R. Deal TI - Quasi-Spectral Theory. JO - Mathematica Scandinavica PY - 1963 SP - 188 EP - 198 VL - 13 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MS2_1963__13_165860/ ID - MS2_1963__13_165860 ER -