Herencsar, N., Koton, J., Horng, J.-W., Vrba, K. and Venclovsky, M. (2015) “Voltage-Mode CFTA-C Third-Order Elliptic Low-Pass Filter Design and Optimization Using Signal Flow Graph Approach”, Elektronika ir Elektrotechnika, 21(2), pp. 24-29. doi: 10.5755/j01.eee.21.2.11508.