LEAL, G. et al. Heavy hydrocarbon-coal surfactant-water-CCTA mixture technology. semi-industrial evaluation. CT&F - Ciencia, Tecnología y Futuro, [S. l.], v. 1, n. 5, p. 45–55, 1999. DOI: 10.29047/01225383.568. Disponível em: https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/568. Acesso em: 19 apr. 2024.