@article {24043,
	title = {Tree-ring data document 16th century megadrought over North America},
	volume = {81},
	year = {2000},
	keywords = {data, megadrought, tree ring},
	isbn = {0096-3941},
	author = {Stahle, D .W. and Cook, E.R. and Cleaveland, M.K. and Therrell, M.D. and Meko, D.M.}
}
