@inproceedings{SIGMOD-1991-PerrizoRR,
	author        = "William Perrizo and Joseph Rajkumar and Prabhu Ram",
	booktitle     = "{Proceedings of the 21st ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD91/P032.PDF",
	doi           = "10.1145/115790.115794",
	pages         = "32--39",
	title         = "{HYDRO: A Heterogeneous Distributed Database System}",
	year          = 1991,
}