TY - JOUR AU - Schwarz, Štefan TI - Circulant Boolean relation matrices JO - Czechoslovak Mathematical Journal PY - 1974 SP - 252 EP - 253 VL - 24 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1974.101236/ DO - 10.21136/CMJ.1974.101236 LA - en ID - 10_21136_CMJ_1974_101236 ER -