%0 Journal Article %T Dynamical Mappings of Density Operators in Quantum Mechanics %A Jordan, Thomas F. %A Sudarshan, E. C. G. %A , %J Journal of Mathematical Physics %V 2 %N 6 %P 772-775 %@ 0022-2488 %D 1961-11-01 %I AIP Publishing %~ DeepDyve