1. Institute of Chemistry, Agricultural and Pedagogical University, 3-go Maja 54, 08-110, Siedlce, Poland
2. H. Niewodniczański Institute of Nuclear Physics, E. Radzikowskieo 152, 31-342, Kraków, Poland
3. Sektion Chemie, Martin-Luther Universität, Mühlpforte 1, 40 20, Halle/S, GDR
4. Institute of Physics, Jagellonian University, Reymonta 4, 30-59, Kraków, Poland