@conference {,
	title = {The Aconcahua Obsidian Source and its Relation to south-central Andean Exchange Systems},
	booktitle = {38th Annual Meeting of the Institute of Andean Studies},
	year = {1998},
	note = {Andes Geog},
	address = {Berkeley, CA},
	author = {Frye, Kirk L. and Aldenderfer, Mark and Michael D. Glascock}
}