Danchuwa, Ibrahim Mohammed, et al. “Characterization of Some Portland Limestone Cements in Nigeria Using Fourier-Transform Infrared Spectroscopy (FTIR)”. Journal of Structural Monitoring and Built Environment, vol. 2, no. 1, Dec. 2022, pp. 49-58, https://publisher.uthm.edu.my/ojs/index.php/jsmbe/article/view/11619.