@article{CG_TAC2010,
	author="F.P. Carli and T.T. Georgiou",
	title="On the Covariance Completion Problem under a Circulant Structure",
	journal="IEEE Transactions on Automatic Control",
	year="2011",
	month="April",
	pages="918 -922",
	volume="56",
	number="4"
}