Biondi, Franco. 1994. ?Spatial And Temporal Reconstruction Of Twentieth-Century Growth Trends In A Naturally-Seeded Pine Forest?. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=740900561&sid=29&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Biondi, Franco. 1987. ?Influence Of Gambel Oak On Radial Growth Of Southwestn Ponderosa Pine: A Dendrochronological Study?. School Of Renewable Natural Resources. School Of Renewable Natural Resources. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=754449011&sid=5&Fmt=2&clientId=43922&RQT=309&VName=PQD.