TY - JOUR AU - Robert Kaufman TI - Analytic sets in the theory of commutative semigroups JO - Studia Mathematica PY - 2015 SP - 3 EP - 6 VL - 228 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm228-1-2/ DO - 10.4064/sm228-1-2 LA - en ID - 10_4064_sm228_1_2 ER -