@inproceedings {5076,
	title = {Path Constraints for Graph-Based Data Models: Towards a Unified Theory Of Typing Constraints, Equations, and Functional Dependencies},
	booktitle = {International Conference on Deductive and Object-Oriented Databases (DOOD)},
	year = {1991},
	doi = {10.1007/3-540-55015-1_17},
	author = {Neil Coburn and Grant Weddell}
}
