TY - JOUR AU - G. Grätzer TI - A reduced free product of lattices JO - Fundamenta Mathematicae PY - 1971 SP - 21 EP - 27 VL - 73 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-73-1-21-27/ DO - 10.4064/fm-73-1-21-27 LA - en ID - 10_4064_fm_73_1_21_27 ER -