1. Aashto, T. (2015). 208 Standard method of test for unconfined compressive strength of cohesive soil. Published the American Association of State Highway and Transportation Officials, (AASHTO).
2. Evaluation of suarcane bagasse ash as replacement for cemet in concrete works;Abdulkadir,2014
3. Aerospace Engineering: Strength and stiffness characteristics, retrieved from (2022). https://www.ae.msstate.edu/vlsm/materials/strength_chars/.
4. Stabilization of expansive sub-grade soil using hydrated lime and dolomitic-limestone by-product (DLP);Ahmed;Geotechnical and Geological Engineering,2020
5. The use of rice husk ash as an aggregate for foundry sand production in Nigeria;Aigbodion,2008