@conference {124,
	title = {Solution of a {R}iccati equation for the design of an observer contracting a {R}iemannian distance},
	booktitle = {Proceedings of the IEEE Conference on Decision and Control},
	series = {NULL},
	year = {2015},
	month = {December},
	pages = {4996--5001},
	author = {R. G. Sanfelice and L. Praly}
}
