1. Effects of meteoroid impacts on space vehicles;Eichelberger;Am. Rocket Soc. J.,1962
2. A. C. Charters and J. L. Summers, High speed impact of metal projectiles in target of various materials, Proc. Symp. Hypervelocity Impact, 3rd, Armor Res. Foundation, Chicago, Illinois (1958).
3. A. C. Charters and J. L. Summers, Some comments on the phenomena of high speed impacts, Proc. Decennial Symp., White Oak U.S. Naval Ord. Lab. (1959).
4. W. W. Atkins, Hypervelocity penetration studies, Proc. Symp. Hypervelocity Impact, 3rd, Armour Res. Foundation, Chicago, Illinois (Feb. 1959).
5. J. L. Summers and W. R. Niehaus, A Preliminary Investigation of the Penetration of Slender Metal Rods in Thick Metal Targets, NASA TN-D-137 (Dec. 1959).