1. Guide for design of pavement structures;AASHTO,1986
2. ASAE EP542 FEB99, 2006a. Procedures for Using and Reporting Data Obtained with the Soil Cone Penetrometer. American Society of Agricultural and Biological Engineers (ASABE) Standards.
3. ASAE S313.3 FEB04, 2006b. Soil Cone Penetrometer. ASABE Standards.
4. ASTM D5874-16, 2016. Standard Test Methods for Determination of the Impact Value (IV) of a Soil. ASTM International. West Conshohocken, PA. .
5. ASTM D6951/D6951M-09, 2015. Standard Test Method for use of the Dynamic Cone Penetrometer in Shallow Pavement Applications. ASTM International. West Conshohocken, PA. .