IMBÒ, P.; GANDINI, G. . Electro Magnetic Wireline Retrievable-Surface Controlled Subsurface Safety Valve: A New Backup For Surface Controlled Subsurface Safety Valve To Avoid WorkOver. Journal of Petroleum Research and Studies, [S. l.], v. 2, n. 3, p. 1-21, 2011. DOI: 10.52716/jprs.v2i3.47. Disponível em: https://jprs.gov.iq/index.php/jprs/article/view/47. Acesso em: 27 jul. 2024.