TY - JOUR AU - Chajda, Ivan TI - Two constructions of compatible relations JO - Czechoslovak Mathematical Journal PY - 1978 SP - 439 EP - 444 VL - 28 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1978.101549/ DO - 10.21136/CMJ.1978.101549 LA - en ID - 10_21136_CMJ_1978_101549 ER -