Benson, L, Kashgarian, M, Rye, R, Lund, S, Paillet, F, Smoot, J, Kester, C, Mensing, S, Meko, D, and Lindstrom, S, 2002, Holocene multidecadal and multicentennial droughts affecting Northern California and Nevada: Quaternary Science Reviews, v. 21, p. 659-682.