@article{SF_1993__46_1_135240,
     author = {M. Ciric and S. Bogdanovic},
     title = {Decompositions   of semigroups induced by identities.},
     journal = {Semigroup forum},
     pages = {329--346},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1993},
     zbl = {0793.20054},
     url = {http://geodesic.mathdoc.fr/item/SF_1993__46_1_135240/}
}