%0 Journal Article %A Joachim N. Grispolakis %T On a problem of Lelek concerning open mappings %J Colloquium Mathematicum %D 1978 %P 253-261 %V 39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-39-2-253-261/ %R 10.4064/cm-39-2-253-261 %G en %F 10_4064_cm_39_2_253_261