@book{40877,
	author = {Wigger, P. J. and Araneda, M.},
	title = {Variation in the Crustal Structure of the Southern Central Andes Deduced from Seismic Refraction investigationsTectonics of the Southern Central Andes :},
	publisher = {[s.n.],},
	year = {[19--].},
	address = {[s.l.]:}
}