Progress of Theoretical PhysicsOn the Entropy Problem in the Theory of Measurement in Quantum MechanicsSaburo AmaiPublished May 1, 1964• 0 citationsPublisherAbstractSaburo Amai; On the Entropy Problem in the Theory of Measurement in Quantum Mechanics, Progress of Theoretical Physics, Volume 31, Issue 5, 1 May 1964, Pages 93DOI10.1143/ptp.31.931