TY  - JOUR
AU  - François Biraben
TI  - The first decades of Doppler-free two-photon spectroscopy
JO  - Comptes Rendus. Physique
PY  - 2019
SP  - 671
EP  - 681
VL  - 20
IS  - 7-8
PB  - Elsevier
DO  - 10.1016/j.crhy.2019.04.003
LA  - en
ID  - CRPHYS_2019__20_7-8_671_0
ER  -