1. AASHTO (1970, 1986), Standard Specifications for Highway Materials and Methods of Sampling and Testing, part 1.
2. Abdun-Nur, E. A. (1966), Discussion of “Quality control of compacted earthwork,” Journal of the Soil Mechanics and Foundations Division,ASCE, 92, No. SM4, p. 116.
3. ASTM (1970a), Suggested methods of test for securing the liquid limit of soils using one-point data, Special Procedures for Testing Soil and Rock for Engineering Purposes, ASTM Special Technical Publication 479, pp. 94–96.
4. ASTM (1970b), Suggested method of test for rapid compaction control, Special Procedures for Testing Soil and Rock for Engineering Purposes, ASTM Special Technical Publication 479, pp. 502–515.
5. ASTM (1985), 1985 Annual Books of ASTM Standards, Section 4, Construction, Volume 04.08, Soil and Rock; Building Stones.