Physical Review LettersComment on ‘‘Quantum limitations on measurement of magnetic flux’’A. J. Leggett, Anupam GargPublished Nov 6, 1989• 15 citationsPublisherAbstractA Comment on the Letter by Asher Peres, Phys. Rev. Lett. 61, 2019 (1988).Received 21 August 1989DOI:https://doi.org/10.1103/PhysRevLett.63.2159©1989 American Physical SocietyDOI10.1103/physrevlett.63.2159