1. Riggs, L.A., Visual Acuity, Vision and Visual Perception, Graham, C.H., et al., Eds., New York: Wiley, 1965, p. 321.
2. International standard, ISO 8597, Optics and Optical Instruments-Visual Acuity Testing, Geneva, 1994.
3. Bondarko, V.M. and Danilova, M.V., Effect of Surrounding Stimuli on Detection of the Orientation of Rectangular Gratings at the Limit Resolution of the Human Visual System, Fiziol. Chel., 1998, vol. 24, no.5, p. 65.
4. Bondarko, V.M. and Danilova, M.V., What Spatial Frequency Do We Use to Detect the Orientation of a Landolt C?, Vision Res., 1997, vol. 37, p. 2153.
5. Rozhkova, G.I., Tokareva, V.S., Vashchenko, D.I., and Vasil'eva N.N., Age Dynamics of Visual Acuity in Schoolchildren: Binocular Far Visual Acuity, Sensor. Sist., 2001, vol. 15, no.1, p. 47.