@inproceedings{WLC-2000-ShumSG,
	author        = "K. P. Shum and M. K. Sen and Y. Q. Guo",
	booktitle     = "{Proceedings of the Third International Colloquium on Words, Languages & Combinatorics}",
	isbn          = "978-9810249489",
	pages         = "428--433",
	publisher     = "{World Scientific}",
	title         = "{Subdirect Product Structure of Left Clifford Semigroups}",
	year          = 2000,
}