1. Adler, I., Trombka, J., Gerard, J., et al. 1972a, in Apollo 15: Preliminary Science Report, NASA SP-289, 17
2. Adler, I., Gerard, J., Trombka, J., et al. 1972b, in Proceedings of the Third Lunar Science Conference, 3, 2157
3. Altamirano, D., Degenaar, N., in 't Zand, J., Markwardt, C., & Wijnands, R. 2008, ATel #1459
4. Arnold, J. R., Peterson, L. E., Metzger, A. E., Trombka, J.I. 1972, in Apollo 15: Preliminary Science Report, NASA SP-289, 16