Xu, M., Felker, P. M., Mamone, S., Horsewill, A. J., Rols, S., Whitby, R. J., and Bačić, Z. The endofullerene HF@C60: Inelastic neutron scattering spectra from quantum simulations and experiment, validity of the selection rule, and symmetry breaking. J. Phys. Chem. Lett. 10, 5365−5371 (2019)