Observation of the 6S1/2-7S1/2 single-photon transition of cesium induced by an external d. c. electric field M.A. Bouchiat et L. PottierJ. Physique Lett., 36 7-8 (1975) 189-192DOI: https://doi.org/10.1051/jphyslet:01975003607-8018900
