@inproceedings{STOC-1990-OgiwaraW,
	author        = "Mitsunori Ogiwara and Osamu Watanabe",
	booktitle     = "{Proceedings of the 22nd Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/100216.100276",
	isbn          = "0-89791-361-2",
	pages         = "457--467",
	publisher     = "{ACM}",
	title         = "{On Polynomial Time Bounded Truth-Table Reducibility of NP Sets to Sparse Sets}",
	year          = 1990,
}