@article{SF_1988__37_1_134934,
     author = {S. Subbiah and K.D. jr. Magill and W. Barit},
     title = {Green's relations, the {V} relation and congruences on {S(X).}},
     journal = {Semigroup forum},
     pages = {313--324},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1988},
     zbl = {0648.20062},
     url = {http://geodesic.mathdoc.fr/item/SF_1988__37_1_134934/}
}