Owaid, H. M., Al-Rubaye, M. M. and Al-Baghdadi, H. M. (2021) “Use of waste paper ash or wood ash as substitution to fly ash in production of geopolymer concrete”, Scientific Review Engineering and Environmental Studies (SREES), 30(3), pp. 464–476. doi: 10.22630/PNIKS.2021.30.3.39.