TY - GEN PB - University of Zielona Góra Press, Poland L1 - http://zbc.uz.zgora.pl/Content/2772/HTML/10smolka.pdf L2 - http://zbc.uz.zgora.pl/Content/2772 T1 - International Journal of Applied Mathematics and Computer Science (AMCS) 2003, volume 13, number 3 UR - http://zbc.uz.zgora.pl/dlibra/docmetadata?id=2772 ER -