TY  - RPRT
TI  - Lasing without population inversion in a simple three-level atomic system.
AU  - Sq Gong
AU  - Hg Teng
AU  - Zz Xu
PY  - 1995
DO  - 10.1103/physreva.51.3382
UR  - https://pubmed.ncbi.nlm.nih.gov/9911985/
ID  - 9911985
ER  -