%0 Journal Article %A Li, Yong Min %A Guo-jun, Wang %T Localic Katětov-Tong insertion theorem and localic Tietze extension theorem %J Commentationes Mathematicae Universitatis Carolinae %D 1997 %P 801-814 %V 38 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1997__38_4_a14/ %G en %F CMUC_1997__38_4_a14