%0 Journal Article %A KoƂodziej, J. %A Xhafa, F. %T Modern approaches to modeling user requirements on resource and task allocation in hierarchical computational grids %J International Journal of Applied Mathematics and Computer Science %D 2011 %P 243-257 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IJAMCS_2011_21_2_a2/ %G en %F IJAMCS_2011_21_2_a2