## R. Turner

*An Infinite Hierarchy of Term Languages — An Approach to Mathematical Complexity*

ICALP, 1972.

@inproceedings{ICALP-1972-Turner, author = "R. Turner", booktitle = "{Proceedings of the Colloquium on Automata, Languages and Programming}", isbn = "0-7204-2074-1", pages = "593--608", title = "{An Infinite Hierarchy of Term Languages — An Approach to Mathematical Complexity}", year = 1972, }