@inproceedings{STOC-1976-FongU,
	author        = "Amelia C. Fong and Jeffrey D. Ullman",
	booktitle     = "{Proceedings of the Eighth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800113.803639",
	pages         = "121--125",
	publisher     = "{ACM}",
	title         = "{Finding the Depth of a Flow Graph}",
	year          = 1976,
}