by Vyukhina, N.N., Gibin, I.S., Dombrovsky, V.A., Dombrovsky, S.A., Pankov, B.N., Pen, E.F., Potapov, A.N., Sinyukov, A.M., Tverdokhleb, P.E., Shelkovnikov, V.V.
Published in Optics and laser technology (01.06.1996)