by Alekhin, A.A., Ionin, A.A., Kozhushko, S.E., Kourylyova, I.M., Kudryashov, S.I., Kuz'min, K.K., Likhvansteva, V.G., Samoylov, M.V., Seleznev, L.V., Sinitsyn, D.V., Zakharov, S.D.
Published in Laser physics letters (01.06.2010)

by Dolgikh P.P, Samoylov M.V
Published in Bulletin of KrasGAU (2016)