@article{SF_1995__50_3_135364, author = {K.P. Shum and G. Yuqi and Z. Pinyu}, title = {The structure of left {C-rpp} semigroups.}, journal = {Semigroup forum}, pages = {9--24}, publisher = {mathdoc}, volume = {50}, number = {3}, year = {1995}, zbl = {0821.20046}, url = {http://geodesic.mathdoc.fr/item/SF_1995__50_3_135364/} }