@book{226991,
	author = {Husebye, Eystein S, ed},
	title = {Identification of seismic sources-earthquake or underground explosion; proceedings of the nato advanced study institute held at vokesenasen, oslo, Norway, Sept 8-18, 1980},
	publisher = {D Reidel},
	year = {1981},
	address = {Dordrecht}
}