TY - GEN PB - University of Zielona Góra Press, Poland L1 - http://www.zbc.uz.zgora.pl/Content/2774/HTML/10gu.pdf L2 - http://www.zbc.uz.zgora.pl/Content/2774 T1 - International Journal of Applied Mathematics and Computer Science (AMCS) 2003, volume 13, number 4 UR - http://www.zbc.uz.zgora.pl/dlibra/docmetadata?id=2774 ER -