%0 Journal Article %A Milewski, P. %A Pol, R. %T On a theorem of Holický and Zelený concerning Borel maps without $\sigma$-compact fibers %J Czechoslovak Mathematical Journal %D 2003 %P 535-543 %V 53 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2003__53_3_a3/ %G en %F CMJ_2003__53_3_a3