Bilski, Marcin, Marta Mielczarek, Przemysław Górnaś, Mieczysław Słowik, and Patrycja Wojciechowska. “The Effect of the Mixing Method of the Addition of Gilsonite Natural Bitumen on Asphalt Mixture Properties”. Roads and Bridges - Drogi i Mosty 21, no. 3 (September 22, 2022): 239–251. Accessed July 22, 2024. https://rabdim.pl/index.php/rb/article/view/v21n3p239.