@inproceedings{SIGMOD-1980-LamY,
	author        = "K. Lam and Clement T. Yu",
	booktitle     = "{Proceedings of the 10th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD80/P125.PDF",
	doi           = "10.1145/582250.582270",
	pages         = "125--132",
	publisher     = "{ACM Press}",
	title         = "{An Approximation Algorithm for a File-Allocation Problem in a Hierarchical Distributed System}",
	year          = 1980,
}