TY  - RPRT
TI  - Variational approximation for two-color ionization.
AU  - F Zhou
AU  - L Rosenberg
PY  - 1991
DO  - 10.1103/physreva.44.3270
UR  - https://pubmed.ncbi.nlm.nih.gov/9906328/
ID  - 9906328
ER  -