Water and sustainable land use at the ancient tropical city of Tikal, Guatemala.
Scarborough VL, Dunning NP, Tankersley KB, Carr C, Weaver E, Grazioso L, Lane B, Jones JG, Buttles P, Valdez F, et al. Proc Natl Acad Sci U S A. 2012 Jul 31; 109(31):12408-13. Epub 2012 Jul 16.