1. O. V. Kazakova and V. N. Orekhovich, Vopr. Med. Khimii, No. 1, 63 (1963).
2. O. V. Kazakova and V. N. Orekhovich, Vopr. Med. Khimii, No. 5, 500 (1963)
3. V. N. Orekhovich, Biokhimiya, No. 3, 331 (1940).
4. M. L. Anson, J. Gen. Physiol.,22, 79 (1939).
5. J. Bradbury, Nature,178, 912 (1956).