A  Goltsov, Morozov, A , Suckewer, S , Elton, R , Feldman, U , Krushelnick, K , Jones, T , Moore, C , Seely, J , Sprangle, P , and others, . 1999. ?Is Efficiency Of Gain Generation In Li Iii 13.5-Nm Laser With 0.25-/Spl Mu/M Subpicosecond Pulses The Same As With 1/Spl Mu/M??. Ieee Journal Of Selected Topics In Quantum Electronics, 5, Pp. 1453?1459.