Dai, A., K.E. Trenberth, and T.R. Karl. 1998. Global Variations in Droughts and
Wet Spells: 1900-1995. J. Geophysical Research, 27(17): 3367-3370.
Acuna-Soto, R.A., Stahle, D.W., Cleaveland, M.K. and Therrell, M.D. 2002.
Megadrought and megadeath in 16th century Mexico. Emerging Infectious Diseases
8(4):360-362.
Cook, E.R., Meko, D.M., Stahle, D.W. and
... Cleaveland, M.K. 1999. Drought
reconstructions for the continental United States. Journal of Climate
12:1145-1162.
Stahle, D.W., Cleaveland, M.K, Blanton, D.B., Therrell, M.D. and Gay, D.A.
1998. The lost colony and Jamestown droughts. Science 280:564-567.
Stahle, D.W., Cook, E.R., Cleaveland, M.K, Therrell, M.D., Meko, D.M.,
Grissino-Mayer, H.D., Watson, E. and Luckman, B.H. 2000. Tree-ring data
document 16th century megadrought over North America. Eos, Transactions,
American Geophysical Union, 81:121-125.
Woodhouse, C.A. and Overpeck, J.T. 1998. 2000 years of drought variability in
the central United States. Bulletin of the American Meteorological Society
79(12):2693-2714.