TY  - JOUR
A1  - Stulpe, Werner
T1  - Density Operator
JF  - Compendium of Quantum Physics : concepts, experiments, history and philosophy / Daniel Greenberger ... ed.
Y1  - 2009
SN  - 978-3-540-70622-9
SP  - 166
EP  - 169
PB  - Springer
CY  - Berlin
ER  -