1. Allen , J. 1979 Visual acuity development in human infants up to 6 months of age Unpublished doctoral dissertation, University of Washington
2. Human visual development over the first 6 months of life: a review and a hypothesis;Atkinson;Human Neurobiology,1984
3. Preferential looking for monocular and binocular acuity testing of infants;Atkinson;British Journal of Ophthalmology,1982
4. The preferential looking method for visual acuity assessment in infants with special reference to normal curve, visual acuity difference between the two eyes and success rate in measurement;Awaya;Folia Ophthalmologica Japonica,1983
5. Visual acuity and its meridional variations in children aged 7-60 months;Birch;Vision Research,1983