TY  - RPRT
TI  - Search for multiphoton-induced inner-shell excitations.
AU  - PH Lee
AU  - DE Casperson
AU  - GT Schappert
PY  - 1989
DO  - 10.1103/physreva.40.1363
UR  - https://pubmed.ncbi.nlm.nih.gov/9902270/
ID  - 9902270
ER  -