%0 Journal Article %A Mihók, Peter %A Semanišin, Gabriel %T Unique factorization theorem for object-systems %J Discussiones Mathematicae. Graph Theory %D 2011 %P 559-575 %V 31 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2011_31_3_a10/ %G en %F DMGT_2011_31_3_a10