%0 Journal Article %A Niemiec, Piotr %T Functor of extension of $\Lambda$-isometric maps between central subsets of the unbounded Urysohn universal space %J Commentationes Mathematicae Universitatis Carolinae %D 2010 %P 541-549 %V 51 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2010__51_3_a14/ %G en %F CMUC_2010__51_3_a14