1. Summary of available hail literature and the effect of hail on aircraft in flight;Souter,1952
2. Hallquist JO. LS-DYNA theoretical manual, LSTC, May 1998.
3. Hallquist JO. LS-DYNA keyword user's manual, LSTC, vol.1–2, March 2001.
4. Thomson RG, Hayduk RJ. An improved analytical treatment of the denting of thin sheets by hail. NASA technical note D-6102, Washington, DC, January, 1971, p. 1–36.
5. Thomson RG, Hayduk RJ. An analytical evaluation of the denting of airplane surfaces by hail. NASA technical note D-5363, Washington, DC, August 1969, p. 1–34