@inbook{NnAaaa,
	author="S. Bolognani and G. Cavraro and S. Zampieri",
	title="A distributed feedback control approach to the optimal reactive power flow problem",
	booktitle="Control of Cyber-Physical Systems",
	year="2013",
	pages="259-277",
	volume="449",
	series="Lecture Notes in Control and Information Sciences",
	publisher="Springer"
}