1. Institue of Chemistry, Agricultural and Pedagogical University, 3-go Maja 54, 08-110, Siedlce, Poland
2. Institute of Physics, Jagellonian University, Reymonta, 30-059, Kraków
3. Physikalische Chemie, Martin Luther Universitét, Mühlpforte 1, 401, Haale/S., GDR
4. Institute of Physics, Technical University of Cracow, Podchorażych 1, 30-292, Kraków, Poland