%0 Journal Article %T Summaries of articles published in this issue %J Czechoslovak Mathematical Journal %D 1969 %P -570 %V 19 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1969.100923/ %R 10.21136/CMJ.1969.100923 %G en %F 10_21136_CMJ_1969_100923