%0 Journal Article %A Roman Pol %T On a question of H.H. Corson and some related problems %J Fundamenta Mathematicae %D 1980 %P 143-154 %V 109 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-109-2-143-154/ %R 10.4064/fm-109-2-143-154 %G en %F 10_4064_fm_109_2_143_154