1. 1) J. I. Moench, K. Fischer, G. Enderlein, O. Grossmann, M. Kubsch, Chr. Rodig and U. Stahlberg: Proc. 6th Internat. Symposium High Purity Materials in Science and Technology, May 6–10, 1985 in Dresden;
2. AdW der DDR, Zentralinstitut fuer Festkoerperphysik und Werkstofforschung Dresden, Part 1 (1985), pp. 54–55.
3. 2) A. Koethe and J. I. Moench: Proc. Internat. Conf. on Ultra High Purity Base Metals UHPM ’99, ed. by K. Abiko and S. Takaki, The Japan Institute of Metals, (2000), in press.
4. 3) B. Fellmuth, D. Elefant and J. I. Moench: Phys. Stat. Sol. (a), 100 (1987), 597–605.
5. 4) H.-C. Mehner, B. Boehmer, U. Hagemann and I. Stephan: Proc. of the 6th ASTM-EURATOM Symposium on Reactor Dosimetry, June 1987, Jackson Hole, Wyoming (USA), June (1987).