@book{10830,
	author = {International Astrophysical Union Colloquium and Brahic, A., ed.},
	title = {Observations and physical properties of small solar system bodies},
	publisher = {Universite De Liege},
	year = {1992},
	series = {Liege international astrophysical colloquium no.30},
	address = {Belgique}
}