TY  - RPRT
TI  - Group theoretical selection rules for electron-impact spectroscopy.
AU  - Goddard, W. A., III
AU  - Cartwright, D. C.
AU  - Trajmar, S.
AU  - Huestis, D. L.
PY  - 1971
UR  - https://ntrs.nasa.gov/citations/19720028247
ID  - 19720028247
ER  -