Engle, James Blaine. 2000. ?A Computer-Assisted Tree-Ring Chronology Composition System?. Electrical And Computer Engineering. Electrical And Computer Engineering. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=729088511&sid=4&Fmt=2&clientId=43922&RQT=309&VName=PQD.