Ochkin V.N. , Savinov S.Y. , Tskhai S.N. , Czarnetzki U.. , V.Scultz-von der Gathen , Dobele H.F. Nonlinear optical techniques for plasma diagnostics. Pr. FIAH , N22 , с. 33 p. , 01.1997 Ochkin V.N. , Savinov S.Y. , Tskhai S.N. , Czarnetzki U.. , V.Scultz-von der Gathen , Dobele H.F. Nonlinear optical techniques for plasma diagnostics. IEEE Tran.Plasma Sci , N5 , с. P.1502-1513 , 01.1998