Klathae , T., N. Sornpakdee, C. Buathongkhue, and N. Deedard. “Utilization of Parawood Ash in Concrete Paving Blocks”. Rajamangala University of Technology Srivijaya Research Journal, vol. 12, no. 1, Apr. 2020, pp. 36-48, https://li01.tci-thaijo.org/index.php/rmutsvrj/article/view/241931.