@article{10_4064_sm228_1_2,
     author = {Robert Kaufman},
     title = {Analytic sets in the theory of commutative semigroups},
     journal = {Studia Mathematica},
     pages = {3--6},
     year = {2015},
     volume = {228},
     number = {1},
     doi = {10.4064/sm228-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm228-1-2/}
}