1. V. L. Dansker, Some Problems in Clinical Surgery, pp. 207–215, Leningrad, 1953. In Russian.
2. P. P. Denisenko, Farmakol. i Toksikol. No. 3, 9–16 (1956).
3. R. A. Khaunina, The Pharmacology of New Drugs, pp. 67–78, Leningrad, 1953. In Russian.
4. E. R. Clark, J. C. Sandison and H. C. Hou, Anat. Rec. 1931, v. 50, p. 169–173.
5. R. Chambers and B. W. Zweifach, Am. J. Anat. 1944, v. 75, p. 173–205.