@article {Mosquera01a,
	title = {On the strengthened robust SPR problem for discrete-time systems},
	journal = {Automatica},
	volume = {37},
	year = {2001},
	month = {apr},
	pages = {625-628},
	keywords = {robust, SPR, strengthened},
	author = {C. Mosquera and Fernando P{\'e}rez-Gonz{\'a}lez}
}
