Lissner, H. R., et al., " Mechanics of Skull Fracture," Proceedmgs of Experimental Stress Analysis, V. 7, No. 1, 1949.
2.
Swearingen, J. J., "Tolerance of Human Face to Crash Impact." Office of Aviation Medicine, F. A. A. Civil Aeromedical Research Institute, Oklahoma City, Oklahoma, July 1965.
3.
Hodgson, V. R., Nakamura, G. S., Talwalker, R. K., " Response of the Facial Structure to Impact," Proceedings of the 8th Stapp Car Crash Conference, 1965.
4.
Daniel, R. and Patrick, L. , "Instrument Panel Impact Study," Proceedings of the 9th Stapp Car Crash Conference, 1965.
5.
Hodgson, V. R., "Tolerance of the Facial Bones to Impact," Am. Journal of Anatomy, V.120, No. 1, Jan. 1967.
6.
Bird, F., et al., "Experimental Determination of the Mechanical Properties of Bones," Aerospace Medicine , Jan. 1968.
7.
Human Tolerance to Impact Conditions as Related to Motor Vehicle Design, A. A. E. J885a, 1966.
8.
Daniel, R. P., "A Bio-Engineering Approach to Crash Padding," 680001 S. A. E. Automotive Engineering Congress, 1968.
9.
Gadd, C. W., Nahum, A. M., Gatts, J. and Danforth, J. P., "A Study of Head and Facial Bone Impact Tolerance," General Motors Co., Automotive Safety Seminar, Proceedings, No. 9, 1-9, 1968.
10.
Weber, C. A., Balazs, C. F., Fuccella, D. C., Burlew, W. W. and Cheesbro, A. M., The Dow Chemical Company, Private Communication .
11.
Weber, C. A., Fuccella, D. C., Bauss, H. H., Cheesbro, A. M. and Burlew, W. W., Private Communication, 1967.
12.
The paint Formulated by William C.Liu, P.D. and S. , The Dow Chemical Co.
13.
The semi-rigid urethane foam was only available in boards of one inch thick.
14.
Lee, W. M., "Stress-Strain Behavior of Plastic Foams I., Homogeneous," to be published in the Proceedings of the 5th International Congress of Rheology, Kyoto, Japan, 1968.
15.
Miller, W. K. and Katz, S., "A Technique for Measuring Local Impact Pressure ," Automotive Safety Seminar, General Motors Corporation, July, 1968.