TY - JOUR TI - Summaries of articles published in this issue JO - Czechoslovak Mathematical Journal PY - 1968 SP - 195 EP - 198 VL - 18 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1968.100823/ DO - 10.21136/CMJ.1968.100823 LA - en ID - 10_21136_CMJ_1968_100823 ER -