@article{DMGAA_2010_30_1_a3,
     author = {Shum, Kar-Ping and Du, Lan and Guo, Yuqi},
     title = {Green's relations and their generalizations on semigroups},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {71--89},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2010_30_1_a3/}
}