1. Gault, Donald E., Shoemaker, Eugene M., and Moore, Henry J.: Spray Ejected From the Lunar Surface by Meteoroid Impact. NASA TN D-1767, 1963
2. Photometric Studies of Complex Surfaces, With Applications to the Moon;Hapke;Journal Geophysical Res.,1963
3. Gault, Donald E., and Heitowit, Ezra D.: The Partition of Energy for Hypervelocity Impact Craters Formed in Rock. Proc. of the 6th Hypervelocity Impact Symposium, Cleveland, Ohio, April 30, May 1–2, 1963.