Hosticka, B. J. et al., "MOS Sampled Data Recursive Filters Using Switched Capacitor Integrators", IEEE Journal of Solid State Circuits, vol. SC-12, No. 6, pp. 600-608, Dec. 1977 (not classified). |
Martin, K. et al., "Strays-Insensitive Switched Capacitor Filters Based On Bilinear Z-Transform", Electronics Letters, vol. 15, No. 13, pp. 365-366, Jun. 21, 1979 (not classified). |
Golyuka et al., Synchronous Detector with an Operational Amplifier, Instruments and Experimental Techniques, vol. 18, #2, pt. 2, pp. 500-501, Mar.-Apr. 1975 (pub. Sep. 1975) (329-126). |