@inproceedings{STOC-1981-DurisG,
	author        = "Pavol Duris and Zvi Galil",
	booktitle     = "{Proceedings of the 13th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800076.802471",
	pages         = "177--188",
	publisher     = "{ACM}",
	title         = "{Fooling a Two-Way Automaton or One Pushdown Store Is Better Than One Counter for Two Way Machines}",
	year          = 1981,
}