TY - GEN PB - University of Zielona Góra Press, Poland L1 - http://www.zbc.uz.zgora.pl/Content/18986/Papers/AMCS_2010_20_2_12.pdf L2 - http://www.zbc.uz.zgora.pl/Content/18986 T1 - International Journal of Applied Mathematics and Computer Science (AMCS) 2010, volume 20, number 2 UR - http://www.zbc.uz.zgora.pl/dlibra/docmetadata?id=18986 ER -