1. R.N. West: Adv. Phys., 1974, vol. 22, p. 263.
2. W. Brandt and A. Dupasquier: Positron Solid State Physics, North-Holland, Amsterdam, 1984, pp. 1–228.
3. K.P. Gopinathan and C.S. Sundar: in Metallic Glasses: Production, Properties and Applications, T.R. Anantharaman, ed., Trans Tech Publications, Stafa-Zurich, Switzerland, 1984, pp. 115–46.
4. H.S. Chen and S.Y. Chuang: Appl. Phys. Lett., 1975, vol. 27, pp. 316–17.
5. Z. Michno and T. Gorecki: Proc. Int. Positron Workshop, Peter Sperr and Gotteried Kogel, eds., Universitat der bundeswehr, Munchen, 1988, p. 61.