@article{MS2_1976__39_166509,
     author = {O. Bratteli and R. H.,Robinson, D. W. Herman},
     title = {Quasianalytic vectors and derivations of operator algebras.},
     journal = {Mathematica Scandinavica},
     pages = {371--381},
     publisher = {mathdoc},
     volume = {39},
     year = {1976},
     zbl = {0344.46124},
     url = {http://geodesic.mathdoc.fr/item/MS2_1976__39_166509/}
}