1. Congenital malformations in autosomal trisomy syndromes;Warkany;Am. J. Dis. Child.,1960
2. Ocular manifestations of trisomy 18;Ginsberg;Am. J. Ophthalmol.,1968
3. Lautridou, A., Le Marec, B., Urvoy, M., Lessard, M., Senecal, J., and Ardouin, M.: A propos de L'examen histopathologique oculaire de quatre case de trisomie 18. In the Fourth International Congress of Human Genetics. Amsterdam, Excerpta Medica, 1971, p. 108.