French, Richard J. 1986. An Electron-Diffraction Investigation of the Molecular Structures of Gaseous Chromyl Fluoride (cro₂f₂), Tribromooxoniobium(v) (nbobr₃), Tribromosulfidoniobium(v) (nbsbr₃), and Dichlorotrifluorophosphorane (pf₃cl₂). : Oregon State University.