%0 Journal Article %T Summaries of articles published in this issue %J Czechoslovak Mathematical Journal %D 1972 %V 22 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1972.101135/ %R 10.21136/CMJ.1972.101135 %G en %F 10_21136_CMJ_1972_101135