arXiv:cond-mat/0203049 · Physical Review LettersComment on “Phonon Spectrum and Dynamical Stability of a Dilute Quantum Degenerate Bose-Fermi Mixture”Sungkit YipPublished May 2, 2003• 1 citationarXivHTMLPDFAbstractWe show that the conclusions of a recent PRL by Pu et al is incorrect.DOI10.1103/physrevlett.90.178901