1. A low sensitivity multiloop feedback active-RC filter;Laker,1972
2. Synthesis of a low sensitivity multiloop feedback active-RC filter;Laker;IEEE Trans. Circuit and Systems,1974
3. On reduced sensitivity active filter;Adams;Proc. 14th Midwest Symp. on Circuit Theory,1971
4. Coupled biquad active filters;Tow;Proc. IEEE Int. Symp. on Circuit Theory,1972
5. Synthesis of multiple-feedback active filters;Szentirmai;Bell Syst. tech. J.,1973