Good, W. V., Brodsky, M. C., Angtuaco, T. ., Ferriero, D. ., Stephens, D. ., & Khakoo, Y. . (1996). Cortical visual impairment caused by twin pregnancy. American Journal of Ophthalmology, 122(5), 709-16. 10.1016/s0002-9394(14)70491-x (Original work published 1996)
