@conference {,
	title = {Preceramic Utilization of the Alca Obsidian Source: Recent Results},
	booktitle = {Northeast Conference on Andean Archaeology and Ethnohistory},
	year = {2004},
	address = {Yale University},
	author = {Kurt Rademaker, and Sandweiss, Dan and Malpass, Michael and Umire, Adam and Vera Cruz, Pablo de la and Fortin, Louis and Morris, Ben}
}