B. Gilbert, "Translinear circuits: A proposed classification,"
Electron.Lett., vol. 11, no. l, pp. 14-16, 1975.
 D. R. Frey, "Exponential state space filters: A generic current mode
design strategy," IEEE Trans. Circuits Syst. I, vol. 43, pp. 34-42,
 R. W. Adams, "filtering in the log domain," presented at the 63rd Audio
Eng. Soc. Conf., New York, NY, preprint q1470, May 1979.
 E. Seevinck and R. J. Wiegerink, "Generalized translinear circuit
principle," IEEE J.Solid -State Circuits, vol. 26, no. 8, pp. 1098-1102,
 A. J. Lopez-Martin and A. Carlosena, "Systematic design of
companding systems by component substitution," Anal. Integr. Circuits
Signal Process., vol. 28, pp. 91-106, 2001.
 J. Mulder, M. H. L. Kouwenhoven, W. A. Serdijn , A. C. van der
Woerd, and A. H. M. van Roermund, "Nonlinear analysis of noise in
static and dynamic translinear circuits," IEEE Trans. Circuits Syst.
.II,vol. 46, pp. 266-277, Mar.1999.
 T. Serrano-Gotarredona, B. Linares-Barranco, and A. G. Andreou, "A
General Translinear Principle for Subthreshold MOS Transistors," IEEE
Trans. On Circuits and Systems-I: fundamental Theory and
Applications, vol.46, no. 5,pp. 607-616, May 1999.
 N. M. Blachman, "The signal-signal, noise-noise, and signal-noise
output of a nonlinearity," IEEE Trans.InformationTheory, vol. IT-14,
pp. 21-27, Jan.1968.
 J. Mulder, W. A. Serdijn ,A. C. van der Woerd, and A. H. M. van
Roermund, "Dynamic translinear and log-domain circuits analysis and
synthesis," Kluwer Academic Publishers,pp.157-189,1999.