| Acronym | Meaning |
| INRS | Institut National De Recherche Et De Securite (Paris |
| CISA | Continuum Intermediate-state Approxn. (for Scattering) |
| AAPG | American Association Of Petroleum Geologists |
| XC | Exchange-coulomb Potential |
| UCAR | University Corporation For Atmospheric Research |
| CASE | Computer Assisted Structure Elucidation |
| PNO-CEPA | Pseudonatural Orbital-coupled Electron Pair Approximation |
| AFNOR | Association Francaise De Normalisation (Paris |
| HSK | Hylleraas Scherr Knight (variational Perturbation Procedure) |
| BS | Backscattering Spectroscopy |