@inproceedings{
	DBB:90,
	author= {C. DeMarco and V. Balakrishnan and S. Boyd},
	title= {A branch and bound methodology for matrix 
		polytope stability problems arising in power systems},
	booktitle= {Proc.\ IEEE Conf.\ on Decision and Control},
	year= {1990},
	pages={3022-3027},
	address={Honolulu, Hawaii},
	month= dec
	}