INTRACAVITY LASER SPECTROSCOPY OF ELEMENTARY PROCESSES BASED ON A CW RING DYE LASER M.G. BRYUKOV, A.A. KACHANOV, S.I. PANOV and O.M. SARKISOV J. Phys. IV France, 01 C7 (1991) C7-485-C7-488 DOI: 10.1051/jp4:19917128