TY - JOUR AU - Istratescu, V. AU - Istratescu, I. TI - On bare and semibare points for some classes of operators JO - Portugaliae mathematica PY - 1970 SP - 205 EP - 211 VL - 29 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PORMA_1970__29_4_115129/ LA - en ID - PORMA_1970__29_4_115129 ER -