@inproceedings{SIGMOD-1991-KrishnamurthyLK,
	author        = "Ravi Krishnamurthy and Witold Litwin and William Kent",
	booktitle     = "{Proceedings of the 21st ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD91/P040.PDF",
	doi           = "10.1145/115790.115795",
	pages         = "40--49",
	title         = "{Language Features for Interoperability of Databases with Schematic Discrepancies}",
	year          = 1991,
}