Owaid, Haider M., Muna M. Al-Rubaye, and Haider M. Al-Baghdadi. “Use of Waste Paper Ash or Wood Ash As Substitution to Fly Ash in Production of Geopolymer Concrete”. Scientific Review Engineering and Environmental Sciences (SREES) 30, no. 3 (June 30, 2021): 464–476. Accessed April 20, 2024. https://srees.sggw.edu.pl/article/view/1913.