1. I. N. Davydov, Byull. Éksptl. Biol. i Med.11, 6, 557 (1941).
2. N. M. Eremeeva, Collected Transactions of the Kursk Medical Institute2, 15 (1955) [In Russian].
3. B. M. Karlinskii, Trudy Karagandinskogo Med. Inst.1, 396 (1957).
4. A. Swensson, Ztschr. ges. exper. Med.122, 14 (1953).