MILLIMETER-WAVE SPECTROSCOPY OF CESIUM RYDBERG STATES AND POSSIBLE APPLICATIONS TO FREQUENCY METROLOGY J.M. Raimond, P. Goy, G. Vitrant et S. Haroche J. Phys. Colloques, 42 C8 (1981) C8-37-C8-43 DOI: 10.1051/jphyscol:1981805