DARAEI, Rahman; M.A. HERKI, Bengin; H.SHERWANI, Aryan Far. Study on the Rapid Drawdown and Its Effect on Portal Subsidence of Heybat Sultan Twin Tunnels in Kurdistan-Iraq. Civil Engineering Journal, [S. l.], v. 3, n. 7, p. 496–507, 2017. DOI: 10.28991/cej-2017-00000108. Disponível em: https://www.civilejournal.org/index.php/cej/article/view/390. Acesso em: 11 sep. 2025.