References
- F. W. Stephenson, “High-pass realization of equal-valued capacitor RC active networks,” Proc. IEEE, Vol. 60, no. 8, pp. 996, August 1972.
- S. C. Dutta Roy, “On the solution of quartic and cubic equation,” IETE J. Educ., Vol. 47, no. 2, pp. 91–5, April–June 2006.