1. A. Akbar, Development of low cost in-situ testing devices. PhD thesis of doctor of philosophy, Newcastle-upon tyne University, 2001, pp. 369.
2. S. Amar, B.G. Clarke, M.P. Gambin, T.L.L. Orr, The application of pressuremeter test results to foundation design in Europe, in: A.A. Balkema (Ed.), European Regional Technical Committee No. 4, Pressuremeters, 1991, pp. 1–24.
3. G. Asch, Les capteurs en instrumentation industrielle. Ed Dunod, 7ème ed., 2010, pp. 864.
4. ASTM D4719, Standard Test Method for Prebored Pressuremeter Testing in Soils. Annual book of ASTM standards, Section 4, v. 04.08, 2007.
5. Experimental determination of stress-strain-time characteristics in laboratory and in-situ tests;Atkinson,1991