1. Botermans, C. H. G.: Primary pigmentary retinal degeneration and its association with neurological diseases. In: Handbook of Clinical Neurology, vol. 13: 148–379. North-Holland Publ. Co., Amsterdam, (1972).
2. Franceschctti, A., François, J. & Babel, J.: Chorioretinal Heredodegenerations, pp. 176–180. Charles C. Thomas, Springfield, (1974).
3. Imaizumi, K.: Elcctrophysiological study of retinitis pigmentosa. Acta Soc. Ophthal.mol. Jap., 73, 2347–2487, (1969).
4. Krill, A. E. & Iser, G.: The value of electroretinography in the diagnosis of pigmentary degenerations of the retina. Amer. J. Ophthalmol., 47, 649–656, (1959).
5. Ohba, N., Tanino, T. & Omoto, K.: this proceeding.