@inproceedings {4807,
	title = {An Extensible Query Optimizer for an Objectbase Management System},
	booktitle = {International Conference on Information and Knowledge Management (CIKM)},
	year = {1995},
	doi = {10.1145/221270.221566},
	author = {Tamer Ozsu and Adriana Mu{\~n}oz and Duane Szafron}
}
