1. In Handbuch der speziellen pathologischen Anatomie und Histologie;Ceelen, W.,1931
2. Clinicopathological Conference No. 21 (1954). Postgrad. med. J., 30, 35.
3. Davson, J., Ball, J., and Platt, R. (1948). Quart. J. Med., n.s. 17, 175.
4. Goodpasture, E. W. (1919). Amer. J. med. Sci., 158, 863.
5. Gough, J. (1953). In Recent Advances in Pathology, 6th ed., p. 209, ed. G. Hadfield. Churchill, London.