TY - JOUR
AU - B. Shore
AU - J. Eberly
BT - Optics Communications
DA - Jan-01-1978
DO - 10.1016/0030-4018(78)90272-9
PY - 1978
SP - 83
EP - 88
T2 - Optics Communications
TI - Analytic approximations in multi-level excitation theory
UR - http://linkinghub.elsevier.com/retrieve/pii/0030401878902729
VL - 24
SN - 00304018
ER -