TY - JOUR AU - Fleischer, Isidore TI - Congruence extension from a semilattice to the freely generated distributive lattice JO - Czechoslovak Mathematical Journal PY - 1982 SP - 623 EP - 626 VL - 32 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1982.101838/ DO - 10.21136/CMJ.1982.101838 LA - en ID - 10_21136_CMJ_1982_101838 ER -