%0 Journal Article %A Kalenda, Ondřej %T Embedding of the ordinal segment $[0,\omega_1]$ into continuous images of Valdivia compacta %J Commentationes Mathematicae Universitatis Carolinae %D 1999 %P 777-783 %V 40 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1999__40_4_a13/ %G en %F CMUC_1999__40_4_a13