@inproceedings{SIGMOD-1987-CruzMW,
	author        = "Isabel F. Cruz and Alberto O. Mendelzon and Peter T. Wood",
	booktitle     = "{Proceedings of the 17th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD87/P323.PDF",
	doi           = "10.1145/38713.38749",
	pages         = "323--330",
	title         = "{A Graphical Query Language Supporting Recursion}",
	year          = 1987,
}