1. Ocular fundus photography;Allen;Am. J. Ophth.,1964
2. Modern methods in ophthalmoscopy;Ballantyne;Tr. Ophth. Soc. U. Kingdom,1937
3. The reflexion of light from the macular and peripheral fundus oculi in man;Brindley;J. Physiol.,1952
4. L'ophtalmoscopie et la photographie de la retine lumiere infrarouge;Diaz-Caneja;Bull. Soc. franç. ophtal.,1934
5. Zur Technik des Rotf reiscpiegelns;Franceschette;Kongr. deutsch. Ophthal.,1930