A. C. Stark effect on the 4713 Å line emitted by a helium glow discharge in the field of a multimode T.E.A. CO2 laser B. Dubreuil, P. Pignolet, A. Catherinot et P. Davy J. Phys. France, 43 6 (1982) 875-881 DOI: 10.1051/jphys:01982004306087500