%0 Journal Article %T Editorial %J Czechoslovak Mathematical Journal %D 2011 %P 1-1 %V 61 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0011-4/ %R 10.1007/s10587-011-0011-4 %G en %F 10_1007_s10587_011_0011_4