1. H. Egger, T.S. Luk, W. Muller, H. Pummer, C.K. Rhodes: InLaser Techniques in the Extreme Ultraviolet, ed. by S.E. Harris, T.B. Lucatorto (American Institute of Physics, New York 1984) p. 64
2. E.A. Crawford, A.L. Hoffman, R.D. Milroy, D.C. Quimby, G.F. Albrecht: InLaser Techniques in the Extreme Ultraviolet, ed. by S.E. Harris, T.B. Lucatorto (American Institute of Physics, New York 1984) p. 409
3. Ch.G. Christov, I.V. Tomov, I.V. Chaltakov, V.L. Lyutskanov: Opt. Commun.52, 211 (1984)
4. Y.S. Huo, J. Glinski, X.J. Gu, R.F. Code: Opt. Commun51, 181 (1984)
5. M. Watanabe, S. Watanabe, A. Endoh: Opt. Lett.8, 638 (1983)