TY  - RPRT
TI  - Volkov limit for atomic ionization by ultraintense laser fields.
AU  - S Geltman
PY  - 1992
DO  - 10.1103/physreva.45.5293
UR  - https://pubmed.ncbi.nlm.nih.gov/9907624/
ID  - 9907624
ER  -