Esper, J., K. Treydte, H. Gartner, and B. Neuwirth. “A Tree Ring Reconstruction of Climatic Extreme Years since 1427 AD for Western Central Asia”. Journal of Palaeosciences, vol. 50, no. (1-3), Dec. 2001, pp. 141-52, doi:10.54991/jop.2001.1818.