@inproceedings{PODS-1992-Dong,
	author        = "Guozhu Dong",
	booktitle     = "{Proceedings of the 11th Symposium on Principles of Database Systems}",
	cdrom         = "['journals/anthology/cd1-3:PODS92/P081.PDF', 'journals/anthology/dvd1:text/1-3/PODS92/P081.PDF']",
	doi           = "10.1145/137097.137113",
	isbn          = "0-89791-519-4",
	pages         = "81--90",
	publisher     = "{ACM Press}",
	title         = "{Datalog Expressiveness of Chain Queries: Grammar Tools and Characterizations}",
	year          = 1992,
}