1. Houtermans Jan C. 1971 Geophysical interpretations of bristlecone pine radiocarbon measurements using a method of Fourier analysis of unequally spaced data. Unpublished Ph.D. dissertation, Faculty of Philosophy and Natural Science, University of Bern, Switzerland.
2. Angeli Wilhelm 1970b Dendrochronology of bristlecone pine in east-central Nevada. Terminal Report submitted to the Regional Forest, U. S. Forest Service. Ogden, Utah.