1. Allen: J. of met. Res.3, 61 (1923).
2. Anitschkow: Erg. inn. Med.28, 1 (1925).
3. Banting, Best, Collip, Macleod andNoble: Amer. J. Physiol.62, 162 (1922).
4. Bauer u.Nyiri: Med. Klin.1925 II, 1460.
5. Best, Dale, Host andMarks: J. of biol. Chem.70 (1926).