TY - JOUR
AU - J. Eberly
BT - Physical Review Letters
DA - Jan-04-1979
DO - 10.1103/PhysRevLett.42.1049
PY - 1979
SP - 1049
EP - 1052
T2 - Physical Review Letters
TI - Extended Two-Level Theory of the Exponential Index of Multiphoton Processes
UR - http://link.aps.org/doi/10.1103/PhysRevLett.42.1049
VL - 42
SN - 0031-9007
ER -