1. Carls Repert;Abbe, E.(1881;Exp. Phys,197.
2. Cannon, A. B. (1927). J. Amer. med. Ass., 89, 666.
3. Cole, H. N., Usilton, L. J., Moore, J. E., O'Leary, P. A., Stokes, J. H., Wile, U. J., Parran, T., and Vonderlehr, R. A. (1937). J. vener. Dis. Inform., 18, 97.
4. Czapski, S. (1899). v. Graefes Arch. Ophthal., 48, 229.
5. La syphilis hereditaire tardive.;Fournier, A.,1886