1. Adhikary TP. 2004. Coastal slope instability in Auckland and Northland. Proceeding of 9th Australia New Zealand Conference on Geomechanics Auckland New Zealand. p. 378–383.
2. ASTM. 2015. Standard test method for performing the flat plate dilatometer. ASTM Standard D6635-15. West Conshohocken (PA): ASTM International.
3. ASTM. 2020a. Standard test method for electronic friction cone and piezocone penetration testing of soils. ASTM Standard D5778-20. West Conshohocken (PA): ASTM International.
4. ASTM. 2020b. Standard practice for classification of soils for engineering purpose (unified soil classification system)1. ASTM Standard D2487-17ϵ1. West Conshohocken (PA): ASTM International.
5. Baldi G Bellotti R Ghionna V Jamiolkowski M Marchetti S Pasqualini E. 1986. Flat dilatometer tests in Calibration Chambers. Proceeding of In Situ ‘86 ASCE Special Conference on “Use of In Situ Tests in Geotechnical Engineering”. Virginia Tech Blacksburg. VA ASCE Geotechnical Special Publ. 6. p. 431–446.