TY - JOUR AU - Černák, Štefan TI - The Cantor Extension of a Lexicographic Product of $l$-Groups JO - Mathematica slovaca PY - 1973 SP - 97 EP - 102 VL - 23 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1973__23_2_a0/ LA - en ID - MASLO_1973__23_2_a0 ER -