@article {1997,
	title = {Structural stability for time-optimal planar sytheses},
	journal = {Dynam. Contin. Discrete Impuls. Systems 3 (1997), no. 3, 335--371},
	number = {SISSA;95/95/M},
	year = {1997},
	publisher = {SISSA Library},
	url = {http://hdl.handle.net/1963/997},
	author = {Alberto Bressan and Benedetto Piccoli}
}
