%0 Journal Article %A C. Bessaga %T On linear operators and functors extending pseudometrics %J Fundamenta Mathematicae %D 1993 %P 101-122 %V 142 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-142-2-101-122/ %R 10.4064/fm-142-2-101-122 %G en %F 10_4064_fm_142_2_101_122