Physical Review LettersRelevance of Helmholz Flow to Superfluid HydrodynamicsPaul P. CraigPublished Dec 14, 1964• 6 citationsPublisherAbstractReceived 26 October 1964DOI:https://doi.org/10.1103/PhysRevLett.13.708©1964 American Physical SocietyDOI10.1103/physrevlett.13.708