1. Classification of Rotational Energy Levels for Symmetric‐Top Molecules
2. Coriolis interactions about X-Y axes in symmetric tops
3. Infrared Vibration-Rotation Spectroscopy;Duxbury,2000
4. Aspects of quartic and sextic centrifugal effects on rotational energy levels;Watson,1977
5. Molecular Vibrational-Rotational Spectra;Papoušek,1982