Chang, C. - M., A. M. Soliman, and M. N. S. Swamy,
"Analytical synthesis of low-sensitivity high-order voltage-mode DDCC and FDCCII-grounded R and C all-pass filter structures",
Circuits and Systems I: Regular Papers, IEEE Transactions on, vol. 54, no. 7: IEEE, pp. 1430–1443, 2007.
Abstract