1. Sputtering of Ta2O5 by Ar+ ions at energies below 1 keV
2. PhD Thesis, Technical University of Clausthal, Germany (1981).
3. and Proceedings of 4th International Conference on Solid Surfaces and 3rd European Conference on Surface Science (ECOSS), Cannes, France, 1981, ed. by D. A. Degas, and M. Costa, Vol. II, pp. 1234 and 1291.
4. in The Physics of Ionized Gases (XII SPIC 1984), ed. by and pp. 571-598. Belgrade: World Scientific, Singapore, 1985.