@article {16783,
	title = {Interoperability of multiple autonomous databases},
	journal = {ACM Computing SurveysACM Comput. Surv.},
	volume = {22},
	year = {1990},
	month = {1990/09//},
	pages = {267 - 293},
	isbn = {03600300},
	doi = {10.1145/96602.96608},
	url = {http://dl.acm.org/citation.cfm?id=96608},
	author = {Litwin,Witold and Mark,Leo and Roussopoulos, Nick}
}
