TY - JOUR AU - T. Glavosits AU - Zs. Karácsony   TI - Sums and products of intervals in ordered semigroups JO - Analele Universităţii "Ovidius" Constanţa Seria Matematică PY - 2021 VL - XXIX IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ASUO_2021_XXIX_2_a13/ ID - ASUO_2021_XXIX_2_a13 ER -