ALI, Haitham K.; ABDALJABAR, Jihan S. Analysis and Simulation of Active Filters Using Operational Transconductance Amplifier (OTA). European Scientific Journal, ESJ, [S. l.], v. 13, n. 15, p. 170, 2017. DOI: 10.19044/esj.2017.v13n15p170. Disponível em: https://test.eujournal.org/index.php/esj/article/view/9363. Acesso em: 18 apr. 2025.