Physical Review AComment on “Wigner phase-space distribution function for the hydrogen atom”Jens Peder Dahl, Michael SpringborgPublished May 1, 1999• 7 citationsPublisherAbstractWe object to the proposal that the mapping of the three-dimensional hydrogen atom into a four-dimensional harmonic oscillator can be readily used to determine the Wigner phase-space distribution function for the hydrogen atom.DOI10.1103/physreva.59.4099