@article{128246,
  author = {Jon Hougen},
  title = {Coordinates, Hamiltonian, and Symmetry Operations for the Small-Amplitude Vibrational Problem in Methyl-Top Internal-Rotor Molecules like CH<sub>3</sub>CHO},
  year = {1997},
  number = {181},
  month = {1997-01-01},
  publisher = {Journal of Molecular Spectroscopy},
  language = {en},
}