1. Boergen K-P, Richert H (1973) Cataractbildung durch Haemodialyse. Klin Mbl Augenheilk 162:394–398
2. Brandt F (1978) Als Augenarzt in Nepal. Der Augenarzt 12:387–393
3. Caird in: The Human Lens in Relation to Cataract, Ciba Foundation Symposium Elsevier, Excerpta Medica, North-Holland Publisher, Amsterdam p. 271–272
4. Chatterjee A (1973) Cataract in Punjab. In: The Human Lens in Relation to Cataract Ciba Foundation Symposium Elsevier, Excerpta Medica, North-Holland Publisher, Amsterdam
5. Chatterjee A, Rambo VC, Franken S (1968) Vision Survey in Himalaya Area. Am J Ophthalmol 66:113–116