TY - JOUR TI - Summaries of articles published in this issue JO - Czechoslovak Mathematical Journal PY - 1980 SP - EP - 176 VL - 30 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1980.101667/ DO - 10.21136/CMJ.1980.101667 LA - en ID - 10_21136_CMJ_1980_101667 ER -