J. Tanner and C. Mead, An integrated analog optical motion sensor, VLSI Signal Processing, pp.59-76, 1986.

F. Paillet, D. Mercier, T. Bernard, and E. Senn, Low power issues in a digital programmable artificial retina, Proceedings IEEE Alessandro Volta Memorial Workshop on Low-Power Design, 1999.
DOI : 10.1109/LPD.1999.750416

H. Fischer, J. Schulte, J. Giehl, M. Böhm, and J. P. Schmitt, Thin Film on Asic - A Novel Concept for Intelligent Image Sensors, Mat. Res. Soc. Symp. Proc, pp.1139-1145, 1992.
DOI : 10.1016/S0022-3093(05)80367-9

M. Kim, E. Kim, D. Shim, S. Jang, G. Kim et al., An efficient global motion characterization method for image processing applications, IEEE Transactions on Consumer Electronics, vol.43, issue.4, 1997.