@book{22998,
	author = {Bellaiche, Andre and Risler, Jean-Jacques  and Risler, Jean-Jacques ; jt. ed.},
	title = {Sub-Riemannian geometry},
	publisher = {Birkhauser Verlag},
	year = {1996},
	series = {Progress in Mathematics },
	address = {Basel},
	note = {"Purchased under NBHM grant for the year 2002-2003"}
}