Biblio
“A Dendroecological Assessment Of Whitebark Pine In The Sawtooth Salmon River Region Idaho”. Department Of Renewable Natural Resources. Department Of Renewable Natural Resources. Tucson: University of Arizona.
. 1995. 
“Stand Replacing Fire History And Aspen Ecology In The Upper Rio Grande Basin”. Department Of Renewable Natural Resources. Department Of Renewable Natural Resources. Tucson: University of Arizona.
. 2003. 