1. Rao and SeshadriProc. Ind. Acad. Sci., A, 1947,25, 417.
2. —Ibid., 1943,18, 222.
3. Szent-GyorgyiStudies on Biological Oxidations and Some of its Catalysts, published by Barth, Leipsig, 1937, 67.
4. Grabe and HessAnn., 1905,340, 237. Baker, Nodzu and RobinsonJ. C. S., 1929, 74.
5. Rao and SeshadriProc. Ind. Acad. Sci., A, 1947,25, 418 and 419.