TY - JOUR AU - N. Papanastassiou AU - P. K. Pavlakos TI - Regularity, Nearly Regularity and Extensions of Borel Measures Valued in Partially Ordered Semigroups JO - Mathematica balkanica PY - 1987 SP - 89 VL - 1 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MABA_1987_1_1_a9/ ID - MABA_1987_1_1_a9 ER -