TY - JOUR
AU - P. Hammerling
BT - Acta Physica Austriaca
N1 - JILA Pub. 351
PY - 1968
SE - 299
SP - 299
EP - 302
T2 - Acta Physica Austriaca
TI - Note on "The Effective Operator Formalism in Optical Pumping"
VL - 28
ER -