TY - JOUR AU - Lianzhen, Liu AU - Kaitai, Li TI - $R_0$-algebras and weak dually residuated lattice ordered semigroups JO - Czechoslovak Mathematical Journal PY - 2006 SP - 339 EP - 348 VL - 56 IS - 2 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/CMJ_2006__56_2_a4/ LA - en ID - CMJ_2006__56_2_a4 ER -