@article{GDZPPN002288699, title = {On the state of a linear operator and its adjoint.}, journal = {Mathematische Annalen}, volume = {141}, year = {1960}, pages = {153-160}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN002288699} }
KBISHNAMURTHY, V. On the state of a linear operator and its adjoint.. Mathematische Annalen, Tome 141 (1960) pp. 153-160. http://gdmltest.u-ga.fr/item/GDZPPN002288699/