TY  - RPRT
TI  - Murnane, Kapteyn, and Falcone reply.
AU  - MM Murnane
AU  - HC Kapteyn
AU  - RW Falcone
PY  - 1989
DO  - 10.1103/physrevlett.63.339
UR  - https://pubmed.ncbi.nlm.nih.gov/10041047/
ID  - 10041047
ER  -