%0 Journal Article %T Summaries of articles published in this issue %J Czechoslovak Mathematical Journal %D 1969 %P 375-376 %V 19 %N 2 %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1969.100907/ %R 10.21136/CMJ.1969.100907 %G en %F 10_21136_CMJ_1969_100907