1. American Coal Ash Association: Fly Ash Facts for Highway Engineers, Report No FHWA-IF-03-019 (2003).
2. ASTM International: Standard Guide for Design and Construction of Coal Ash Structural Fills, ASTM E2277-14 (2014).
3. David J. White, Dale Harrington, and Zach Thomas: Fly ash Soil Stabilization for Non- Uniform Subgrade Soils, Volume I: Engineering Properties and Construction Guidelines, Final Report TR-461, Iowa State University (2005).
4. Indian Roads Congress: Guidelines for use of Fly Ash in Road Embankments, Special Publication 58, New Delhi (2001).
5. Dallas N. Little, Syam Nair: Recommended Practice for Stabilization of Subgrade Soils and Base Materials, Texas Transportation Institute, Texas A&M University, College Station, Texas (2009).