1. Burnett , D. C. Hohenberg M. Maurette M. Monnin R. Walker D. Wollum Solar cosmic ray, solar wind, solar flare, and neutron albedo measurements Apollo 16 Preliminary Science Report 19 32 1972
2. Neutron flux measurements by fission tracks in solids;Fleischer;Nucl. Sci. Eng.,1965
3. Keizer , R. P. Volcanic Stratigraphy, Structural Geology, and K-Ar Geochronology of the Durango Area, Durango, Mexico 1973
4. Lyons , J. P. Chupaderos Caldera and Associated Volcanogenic Iron Deposits, Durango, Mexico 1974
5. Fission-track-alter von-Durango-apatite, Mexico;Märk;Contr. Mineral, and Petrol.,1971