1. N. V. Bogoyavlenskaya, in book: Problems in Regeneration and Cell Division. Proceedings of a Conference on Regeneration and Cell Proliferation [in Russian]. Moscow, p. 239 (1959).
2. V. N. Dobrokhotov, N. V. Bogoyavlenskaya, and A. G. Kurdyumova, Trydy Moskovsk. obshchestva ispytatelei prirody. Biologicheskii otdel2, 173 (1961).
3. J. A. Birkbeck and A. G. Stewart Canad. J. Biochem., Vol. 39, p. 257 (1961).
4. M. West and H. J. Zimmerman, Arch. intern. Med., Vol. 102, p. 103 (1958).