Physical Review LettersCollective Oscillations of Atoms in the Hartree-Fock ApproximationSol Wieder, Sidney BorowitzPublished Apr 25, 1966• 13 citationsPublisherAbstractReceived 6 December 1966DOI:https://doi.org/10.1103/PhysRevLett.16.724©1966 American Physical SocietyDOI10.1103/physrevlett.16.724