1. Atefeh A, Erwin Oh (2014) Strength parameter selection in stability analysis of residual soil nailed walls. Int J Geomate, 7(1, Sl. No. 13)
2. FHWA (1994) Soil nailing field inspector manual—Soil nail walls. FHWA-SA-93-068, U.S. Department of Transportation, Federal Highway Administration, Washington D.C., USA
3. FHWA (1998) Manual for design & construction monitoring of soil nail walls. FHWA-SA-96-096R, U.S. Department of Transportation, Federal Highway Administration, Washington D.C., USA
4. FHWA, (2003) Geotechnical circular no.7—Soil nail walls. FHWA-IF-03-017, U.S. Department of Transportation, Federal Highway Administration, Washington D.C., USA
5. GeoStudio (2007) Geoslope International Limited, Alberta, Canada