@article{ferrante1999-2,
	author="A. Ferrante and M. Pavon",
	title="The Algebraic Riccati Inequality: Parametrization of Solutions Tightest Local Frames and Generalized Feedback Matrices",
	journal="Linear Algebra and Its Applications",
	year="1999",
	pages="187-206",
	volume="292",
	issn="0024-3795"
}