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3. S. I. Lebedkin, “Changes in the lengths of spinal cord segments and the axial skeleton during development in humans and pigs,” Izv. Nauchn. Inst. im. P. F. Lesgafta, 20, No. 2, 13–94 (1936).
4. I. N. Petrovskii, Epidural Veins of the Vertebral Canal (An Anatomical Experimental Investigation) [in Russian], Author’s Abstract of Thesis for Doctorate in Medicine, Simferopol (1984).
5. N. V. Popova-Latkina, “Analysis of topographic anatomical correlations between the brain and spinal cord, skull, and vertebrae, their interaction, and their mutual influences on each other in human embryogenesis,” in: Functional-Structural Bases of Systems Activity and the Mechanisms of Brain Plasticity [in Russian], Meditsina, Moscow (1975), pp. 278–281.