1. Patek, P. R. andS. Bernick, Amer. J. Ophthal.49 (1960).
2. Winter, F. C., Arch. Ophthal.66, 405 (1961).
3. Brégeat, P., L'Oedème papillaire (Paris 1956).
4. Yoffey, J. M. andF. C. Courtice, Lymphatics, Lymph and Lymphoid Tissue (London 1956).
5. Adler, F. H., The Physiology of the eye (St. Louis 1959).