@inproceedings{ferrante2003,
	author="A. Ferrante and G. Picci and S. Pinzoni",
	title="Spectral Factorization and Stochastic  Realization  with Zeros on the Unit Circle",
	booktitle="Proceedings of the 42th IEEE Conference on Decision and Control - CDC 03",
	year="2003",
	month="December",
	pages="1398-1403"
}