@inproceedings{ticozzi2007,
	author="F. Ticozzi and A. Ferrante",
	title="Finding quantum noiseless subsystems: A linear-algebraic approach",
	booktitle="Proceedings of the 3rd International Conference Physics and Control-PhysCon 2007",
	year="2007",
	month="September",
	location="Berlin",
	note="Paper N.1378 (http://lib.physcon.ru/?item=1378)"
}