Amerindian mitochondrial DNAs have rare Asian mutations at high frequencies, suggesting they derived from four primary maternal lineages

by Schurr, Theodore G., Ballinger, Scott W., Gan, Yik Yuen, Hodge, Judith A., Merriwether, David Andrew, Lawrence, Dale N., Knowler, William C., Weiss, Kenneth M., Wallace, Douglas C.
Published 1990