1. American Association of State Highway and Transportation Officials (AASHTO). (2004). LRFD Bridge Design Specifications Washington D. C.
2. American Petroleum Institute (API). (1993). API RP 2A-LRFD: Recommended practice for planning designing and construction fixed pffshore platforms - Load and Resistance Factor Design First Ed. Washington D. C.
3. ASTM D1153. (1994). "Standard test method for piles under static axial Compression load." Annual book of ASTM standards 4.08 ASTM International.
4. Gilbert R.B. Najjar S.S. and Choi Y.J. (2005). "Incorporating lower-bound capacities into LRFD codes for pile foundations." Proc. Geo-Frontiers 2005 Site Characterization and Modeling GSP No. 138 ASCE Reston VA.
5. Najjar S.S. (2005). "The importance of lower-bound capacities in geotechnical reliability assessments." Ph.D. thesis Univ. of Texas at Austin Austin TX.