1. Researches on Pre-natal Life;Barcroft, J.,1946
2. Atlas of the Blood in Children;Blackfan, K.D.; Diamond, L.K.,1944
3. Blackfan, K. D. and Diamond, L. K. and Windle, W. F. (1941). J. Amer. med. Ass., 116, 2568.
4. Windle, W. F. and Alt, H. L. (1942). Amer. J. Dis. Child. 63, 1123.
5. cited by;Johnson, A.R.,1948