SIMON, Gy. SYNTHESIS BY BLOCK CHARACTERIZATION OF OP-AMP ACTIVE FILTERS. Periodica Polytechnica Electrical Engineering, [S. l.], v. 23, n. 3-4, p. 225–235, 1979. Disponível em: https://pp.bme.hu/ee/article/view/4834. Acesso em: 17 jun. 2025.