@article{1102994627, author = {Stampfli, J. G.}, title = {Which weighted shifts are subnormal?}, journal = {Pacific J. Math.}, volume = {19}, number = {3}, year = {1966}, pages = { 367-379}, language = {en}, url = {http://dml.mathdoc.fr/item/1102994627} }
Stampfli, J. G. Which weighted shifts are subnormal?. Pacific J. Math., Tome 19 (1966) no. 3, pp. 367-379. http://gdmltest.u-ga.fr/item/1102994627/