TY - JOUR TI - Summaries of articles published in this issue JO - Czechoslovak Mathematical Journal PY - 1969 SP - 375 EP - 376 VL - 19 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1969.100907/ DO - 10.21136/CMJ.1969.100907 LA - en ID - 10_21136_CMJ_1969_100907 ER -