TY - CONF AU - John Hall C2 - International School of Physics Enrico Fermi Course CXX , North-Holland, CH DA - 1994-01-01 LA - en PB - International School of Physics Enrico Fermi Course CXX , North-Holland, CH PY - 1994 TI - Frequency stabilized lasers a driving force for new spectroscopies, ed. by T.W. Hansch and M. Inguscio ER -