%0 Journal Article %A Agnieszka KaƂamajska %T On the condition of ${\mit \Lambda }$-convexity in some problems of weak continuity and weak lower semicontinuity %J Colloquium Mathematicum %D 2001 %P 43-59 %V 89 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm89-1-3/ %R 10.4064/cm89-1-3 %G en %F 10_4064_cm89_1_3