Amaludin, Adriana Erica, et al. “A Review of Advances in Peat Soil Stabilisation Technology: Exploring the Potential of Palm Oil Fuel Ash Geopolymer As a Soil Stabiliser Material”. Civil Engineering Journal, vol. 9, no. 8, Aug. 2023, pp. 2085-04, doi:10.28991/CEJ-2023-09-08-017.