LITERATURE
- B. Moore, Nierenstein and Todd. Bio-chemical Journal, Vol. II, 1907, p. 300.
- Ehrlich and Berthem. Berichte d. deutschen chemischen Gesellschaft, Vol. 40, p. 3296.
- A. C. H. Gray. Quarterly Report on the Progress of Sleeping Sickness and Medical Treatment of Sleeping Sickness in Uganda, 1908, pp. 32 and 35.