AKHIGBEMIDU, C.O.; OKOLI, J.U. Single Beam Model For Predicting Intrusion In Pipelines. Ife Journal of Technology, [S. l.], v. 20, n. 2, p. 36–45, 2011. Disponível em: http://ijt.oauife.edu.ng/index.php/ijt/article/view/90. Acesso em: 11 oct. 2025.