@inproceedings{STOC-1981-Chan,
	author        = "Tat-hung Chan",
	booktitle     = "{Proceedings of the 13th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800076.802468",
	pages         = "146--157",
	publisher     = "{ACM}",
	title         = "{Reversal Complexity of Counter Machines}",
	year          = 1981,
}