1. Ashwal , L. D. Metamorphic hydration of augite-orthopyroxene monzodiorite to hornblende granodiorite gneiss, Belchertown batholith, west-central Massachusetts Amherst 1974
2. Metamorphic hydration of two-pyroxene monzodiorite to hornblende granodiorite gneiss, Belchertown batholith, Massachusetts (abstract);Ashwal;Eos Trans. AGU,1974
3. Iron-titanium oxide minerals, rocks, and aeromagnetic anomalies of the Adirondack area, New York;Balsley;Econ. Geol.,1958
4. Campbell , B. S. A manual for Prism 111: A program to compute magnetic anomalies and vectors for three dimensional bodies Princeton, N.J. 1971
5. Campbell , B. S. Analysis of a computer program for the computation of paleomagnetic vectors from aeromagnetic data in three-dimensional rock bodies Princeton, N. J. 1971