Progress of Theoretical Physics SupplementObservation Problem of Quantum MechanicsMituo TaketaniPublished Jan 1, 1971• 0 citationsPublisherAbstractMituo Taketani; Observation Problem of Quantum Mechanics*, Progress of Theoretical Physics Supplement, Volume 50, 1 May 1971, Pages 65–72, https://doi.org/10.11DOI10.1143/ptps.50.65