1. P. Ables, Time and motions required to perform an active seismic experiment proposed for the first Apollo landing. USGS Technical Letter. Astrogeol. 12 (1967)
2. J. Allen, Summary of scientific results, Apollo 15 preliminary science report, NASA SP–289, 2-1-2-11, (1972) http://www.hq.nasa.gov/alsj/a15/a15psr.html
3. J. Allton, Catalog of apollo lunar surface geological sampling tools and containers, JSC-23454/LESC-26676, (1989) http://www.lpi.usra.edu/lunar_resources/documents/LunarSampleToolCatalog.pdf
4. Apollo 15 Field Geology Investigation Team, Apollo 15 Lunar Samples–Preliminary Description. Sci. 175(4020), 363–375 (1972)
5. Apollo 16 Field Geology Investigation Team, Apollo 16 Exploration of Descartes–Geologic Summary. Sci. 179(4068), 62–69 (1973)