1. Subgrade stabilization assessment of kuantan clay using lime, Portland, cement, fly ash and bottom ash
2. Effects of alkaline-activated fly ash and portland cement on soft soil stabilisation;Cristelo N, Glendinning S, Fernandes L, et al.;Acta Geotechnica
3. Soil hardpan improvement technique using vibrator subsoiler for rice mechanization farm
4. Zulfahmi AR, Sabturo MSA, Idris WMR, et al. (2017)Effect of organic fertilizer on atterberg limit and strength of problematic clay soil. September 26–27, Perak. Proc Geogr
5. A review of the usefulness of relative bulk density values in studies of soil structure and compaction;Hakansson I, Lipiec J;Soil Tillage Res