@inproceedings{STOC-1972-LindenmayerR,
	author        = "Aristid Lindenmayer and Grzegorz Rozenberg",
	booktitle     = "{Proceedings of the Fourth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800152.804917",
	pages         = "214--221",
	publisher     = "{ACM}",
	title         = "{Developmental Systems and Languages}",
	year          = 1972,
}