1. Akin MK, Kramer SL, Topal T (2011) “Empirical correlations of shear wave velocity (V S) and penetration resistance (SPT-N) for different soils in an earthquake-prone area (Erbaa-Turkey). Eng Geol 119:1–17
2. Ansal A, Erdik M, Kurtulus A, Erken A, Sesetyan K, Siyahi B, Springman S, Laue J (2003) Microzonation in Turkey. Reference information. State of the art, MERM Project; World Institute for Disaster Risk Management
3. ASTM D-1586–99 (1999) Standard test method for penetration test and split-barrel sampling of soils. Subcommittee: D18.02, Book of standards volume: 04.08
4. ASTM D 4633–05 (2005) Standard test method for energy measurement for dynamic penetrometers. Subcommittee: D18.02
5. Athanasopoulos GA (1995) Empirical correlations Vso-NSPT for soils of Greece: a comparative study of reliability. In: Proceedings of seventh international conference on Soil Dynamics, Earthquake Engineering. Computation Mechanics Publications, Southampton, Boston, pp 19–25