@inproceedings{STOC-1975-GinsburgL,
	author        = "Seymour Ginsburg and Nancy A. Lynch",
	booktitle     = "{Proceedings of the Seventh Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800116.803764",
	pages         = "153--158",
	publisher     = "{ACM}",
	title         = "{Comparative Complexity of Grammar Forms}",
	year          = 1975,
}