1. Theory of Land Locomotion;Bekker,1960
2. Off-the-Road Locomotion;Bekker,1960
3. F. Kozin, L.J. Cote and J.L. Bogdanoff. Statistical Studies of Stable Ground Roughness. Land Locomotion Laboratory Report No. 8391.
4. Evaluation and Selection of Optimum Vehicle Types under Random Terrain Conditions;Bekker,1961
5. On the Statistical Properties of the Ground Contour, and its Relation to the Study of Locomotion;Kozin,1961