1. K. F. Vegner, Fractures and Their Treatment [in Russian], Moscow-Leningrad (1926).
2. A. Shants, ?The spine and trauma? Ortopediya i Travmatol.,5?6, 1?5 (1927).
3. N. M. Volkovich, Bone and Joint Injuries [in Russian], Kiev (1928).
4. R. R. Vreden, Practical Orthopedics [in Russian], Leningrad (1936).
5. L. P. Nikolaev, Handbook of Biomechanics and Its Applications in Orthopedics, Traumatology, and the Design of Prostheses, Part 2 [in Russian], Kiev (1950), pp. 33?36.