%0 Journal Article %T Summaries of articles published in this issue %J Czechoslovak Mathematical Journal %D 1978 %P 4-506 %V 28 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1978.101558/ %R 10.21136/CMJ.1978.101558 %G en %F 10_21136_CMJ_1978_101558