@article {2001,
	title = {Extremal synthesis for generic planar systems},
	journal = {J. Dynam. Control Systems, 2001, 7, 209},
	number = {SISSA;45/00/M},
	year = {2001},
	publisher = {SISSA Library},
	doi = {10.1023/A:1013003204923},
	url = {http://hdl.handle.net/1963/1503},
	author = {Ugo Boscain and Benedetto Piccoli}
}
