TY - JOUR A1 - Stulpe, Werner T1 - Operator T2 - Compendium of Quantum Physics : concepts, experiments, history and philosophy / Daniel Greenberger ... ed. Y1 - 2009 UR - https://opus.bibliothek.fh-aachen.de/opus4/frontdoor/index/index/docId/4174 SN - 978-3-540-70622-9 SP - 440 EP - 444 PB - Springer CY - Berlin ER -