H. Kleszczynska, J. Sarapuk, M. Oswiecimska*, S. Witek*
University Agriculture, Department Physics & Biophysics, Norwida 25, PL-50375 Wroclaw, Poland
*Wroclaw Technical University, Department Chemistry, PL-50370 Wroclaw, Poland
Pol. J. Environ. Stud. 2000;9(6):475–478