DOPPLER-FREE TWO-PHOTON LASER SPECTROSCOPY OF RYDBERG STATES IN ALKALINE-EARTH ELEMENTS WITH THERMIONIC DETECTION R. Beigang et A. TimmermannJ. Phys. Colloques, 44 C7 (1983) C7-137-C7-148DOI: https://doi.org/10.1051/jphyscol:1983712
