TY - JOUR AU - Raymond Balbes TI - On free pseudo-complemented and relatively pseudo-complemented semi-lattices JO - Fundamenta Mathematicae PY - 1973 SP - 119 EP - 131 VL - 78 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-78-2-119-131/ DO - 10.4064/fm-78-2-119-131 LA - en ID - 10_4064_fm_78_2_119_131 ER -