@article{GDZPPN002479362, title = {A Trace Inequality of John von Neumann.}, journal = {Monatshefte f\"ur Mathematik}, volume = {79}, year = {1975}, pages = {303-306}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN002479362} }
Mirsky, L. A Trace Inequality of John von Neumann.. Monatshefte für Mathematik, Tome 79 (1975) pp. 303-306. http://gdmltest.u-ga.fr/item/GDZPPN002479362/