%0 Journal Article %A Skula, Ladislav %T Maximal reflectivity preserving subextensions %J Communications in Mathematics %D 1993 %P 59-66 %V 1 %N 1 %U http://geodesic.mathdoc.fr/item/COMIM_1993_1_1_a6/ %G en %F COMIM_1993_1_1_a6