@article{1102994128, author = {Embry, Mary R.}, title = {Conditions implying normality in Hilbert space.}, journal = {Pacific J. Math.}, volume = {19}, number = {3}, year = {1966}, pages = { 457-460}, language = {en}, url = {http://dml.mathdoc.fr/item/1102994128} }
Embry, Mary R. Conditions implying normality in Hilbert space.. Pacific J. Math., Tome 19 (1966) no. 3, pp. 457-460. http://gdmltest.u-ga.fr/item/1102994128/