A. Poowancum, P. Kotkhangphlu, and J. Ayawanna. “Effective Treatment Technique for Producing A Highly Pozzolanic Clay in a Construction Work”. Geotechnical Engineering Journal of the SEAGS & AGSSEA, vol. 52, no. 3, Sept. 2021, pp. 8-11, doi:10.14456/seagj.2021.12.