1. a Institute of Chemistry , Agricultural and Pedagogical College, 08-110 Siedlce, 3-go , Maja, 54, Poland
2. b Institute of Physics , Jagellonian University , 30-059, Kraków, Reymonta 4, Poland
3. c Martin-Luther-Universitat , Sektion Chemie, 402, Halle/Saale, Muhipforte 1, GDR
4. d Technical University of Cracow , Institute of Physics , Podchorαzych 1, 30-929, Kraków, Poland