%0 Journal Article %A Kohli, J. K. %T Local Topological Properties of Maps and Open Extensions of Maps %J Canadian journal of mathematics %D 1977 %P 1121-1128 %V 29 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-110-1/ %R 10.4153/CJM-1977-110-1 %F 10_4153_CJM_1977_110_1