1. Brittain, I., u. G. J. C. Brittain: Brit. med. J. 1, 442–444 (1945).
2. Comberg, W., u. E. Stoewer: Z. Augenheilk. 58, 92–103 (1926)
3. Filatov, V. P.: Vestn. Oftal. 11, 151–153 (1937)
4. Filatov, V. P.: ref. Zbl. Ophthal. 40, 574 (1938).
5. Filatov, V. P.:, L G. Ierschkovitch u. V. E. Šévalov: Vestn. Oftal. 11, 161–167 (1937)