1. Ames, W.F., (1977) Numerical Methods for Partial Differential Equations, 2nd ed., New York: Academic Press.
2. Barlow, H.B., Hill, R.M., and Levick, W.R., (1964) ‘Retinal ganglion cells responding selectively to direction and speed of image motion in the rabbit,’ J. of Physiology, vol. 173, pp. 377–407.
3. Barlow, H.B. and Levick, W.R., (1965) ‘The mechanism of directionally selective units in rabbit’s retina,’ J. of Physiology, vol. 178, pp. 477–504.
4. Barrow, H.G. and Tenenbaum, J.M., (1978) ‘Recovering intrinsic scene characteristics from images,’ in Computer Vision Systems, A.R. Hanson and E.M. Riseman (eds.), Academic Press, New York.
5. Batali, J. and Ullman, S., (1979) ‘Motion detection and analysis,’ in Image Understanding, L.S. Baumann (ed.), Science Applications, Arlington, Virginia, pp. 69–75