Laughlin, D.C.; Bakker, J.D.; Fulé; P.Z. 2005. Understorey plant community structure in lower montane and subalpine forests, Grand Canyon National Park, USA. Journal of Biogeography. 32(12): 2083-2102.

Laughlin, D.C.; Bakker, J.D.; Fulé; P.Z. 2005. Understorey plant community structure in lower montane and subalpine forests, Grand Canyon National Park, USA. Journal of Biogeography. 32(12): 2083-2102.