@inproceedings{
	BaB:91,
	author={V. Balakrishnan and S. Boyd},
	title={Computation of the Worst-Case Covariance for
	Linear Systems with Uncertain Parameters},
	booktitle={Proc.\ IEEE Conf.\ on Decision and Control},
	year={1991},
	pages={1941-1942},
	address={Brighton, U.K},
	month=dec
}