@inproceedings{STOC-1991-Ko,
	author        = "Ker-I Ko",
	booktitle     = "{Proceedings of the 23rd Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/103418.103427",
	isbn          = "0-89791-397-3",
	pages         = "10--20",
	publisher     = "{ACM}",
	title         = "{Integral Equations, Systems of Quadratic Equations, and Exponential-Time Completeness}",
	year          = 1991,
}