salih alzbaidy saad, سعد, Al-Khazraji A, عمار. The use of lignin in the rheological modification of Dura asphalt. EDUSJ [Internet]. 2020 Dec. 1 [cited 2025 Aug. 4];29(4):22-41. Available from: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/18386