1. Lopez-Martin, A.J., Carlosena, A., 1999. Geometric-mean based current-mode cmos multiplier/divider, in: ISCAS'99.Proceedings of the 1999 IEEE International Symposium on Circuits and Systems VLSI (Cat. No. 99CH36349), IEEE. pp.342-345.
2. Current mode cmos multiplier/divider circuit operating in linear/saturation regions;Lopez-Martin;Analog Integr Circ Sig Process,2011
3. Platt, J.C., Wall, M.F., Gribble, G.E., Mead, C.A., 1992. Linear, continuous-time, two quadrant multiplier. US Patent 5,107,149.
4. Cmos design of a low power and high precision four-quadrant analog multiplier;Beyraghi;AEU- International Journal of Electronics and Communications,2015