See also: A.N. Skrinskii, Yu.M. Ado, A.I. Alikhan’yan, G.I. Budker, S.A. Kheifets, Yu.A. Bashmakov
PACS: 29.20.Lq, 29.20.Dh, 41.75.Fr, 29.27.Ac, 29.27.Bd, 41.50.+h