TY  - RPRT
TI  - Time-dependent collisional approximations for two-level systems.
AU  - ME Crenshaw
AU  - CD Cantrell
PY  - 1989
DO  - 10.1103/physreva.39.5705
UR  - https://pubmed.ncbi.nlm.nih.gov/9901153/
ID  - 9901153
ER  -