%0 Journal Article %A Istratescu, Vasile I. %A Constantin, Gheorghe %T On quasi-analytic vectors for some classes of operators %J Portugaliae mathematica %D 1983 %P 219-224 %V 42 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1983__42_2_115538/ %G en %F PORMA_1983__42_2_115538