1. A. A. Umanskii, Torsion and Bending of Air-Frames (Oborongiz, Moscow, 1939) [in Russian].
2. G. A. Adadurov, “Determination of Shear Stresses in Thin-Walled Structures Near the Seal,” Trudy TsAGI, 614, 1–13 (1947).
3. L. I. Balabukh, “Strength Calculation of Conical Caissons,” Trudy TsAGI, 640, 1–54 (1947).
4. A. F. Feofanov, Calculation of Thin-Walled Structures (Oborongiz, Moscow, 1958).
5. M. F. Astakhov, A.V. Karavaev, S. Ya. Makarov, et al., Reference Book on Aircraft Strength Anaysis (Oborongiz, Moscow, 1954) [in Russian].