SELVAM, K. C.; LATHA, S. A Simple Square Rooting Circuit Based on Operational Amplifiers (OPAMPs). Engineering, Technology & Applied Science Research, Greece, v. 3, n. 1, p. 349–351, 2013. DOI: 10.48084/etasr.234. Disponível em: https://www.etasr.com/index.php/ETASR/article/view/234. Acesso em: 29 mar. 2024.