TY - JOUR AU - Szylicka, Zyta TI - Proper hypersubstitutions of some generalizations of lattices and Boolean algebras JO - Mathematica slovaca PY - 1997 SP - 251 EP - 266 VL - 47 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1997__47_3_a3/ LA - en ID - MASLO_1997__47_3_a3 ER -