See also: N.B. Delone, I.Sh. Averbukh, V.A. Kovarskii, A.V. Masalov, V.P. Krainov
PACS: 32.80.Rm, 33.80.Rv, 42.50.Dv, 42.65.Sf, 32.80.Kf, 32.80.Fb