1. ASTM, Annual Book of Standards, Vol. 4.08, ASTM 1916 Race St., Philadelphia, PA 19103 (1993)
2. Allard, M.A.: Soil Stress Field Around driven Piles, Dissertation, California Institute of Technology (1990)
3. Bernardes, G.D.: Dynamic and Static Testing of Large Model Piles in Sand, Ph.D. Thesis, Norwegian Institute of Technology (NTH), University of Trondheim (1989)
4. Butler, J., Caliendo, J., Goble, G.: Comparison of SPT Energy Measurement Methods. In: Robertson, P., Mayne, P. (eds.) Proc., Geotechnical Site Characterization, Balkema, pp. 901–905 (1998)
5. Chen, D.D.S., Toto, J.V., Wong, I.H.: Field Evaluation of Hammer Efficiency and Pile Driving Criteria. In: Fuller, F.M. (ed.) Proc. ASCE Piling Symposium, Atlanta, GA (1979)