@article{SF_1991__42_3_135081,
     author = {T. Papazyan},
     title = {Oids, finite sums and the structure of the {Stone-Cech} compactification of a discrete semigroup.},
     journal = {Semigroup forum},
     pages = {265--278},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1991},
     zbl = {0721.22002},
     url = {http://geodesic.mathdoc.fr/item/SF_1991__42_3_135081/}
}