1. Ballantyne, A. J. and Michaelson, I. C.: Text book of the Fundus of the Eye. Baltimore, The Williams & Wilkins Company, 1962, p 216.
2. Changes in the Ocular Fundus in Blood Diseases
3. Sorsby, A.: Systemic Ophthalmology. Ed 2. London, Butterworth & Co. (Publishers) Ltd., 1958, p 579.
4. D’un cas de polyglobulia vera (Mb. Vaquezi) avec hémorragie de la rétine comme premier symptôme
5. PECULIAR ELONGATED AND SICKLE-SHAPED RED BLOOD CORPUSCLES IN A CASE OF SEVERE ANEMIA