1. Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer, D854;ASTM,2014
2. Toxicological Profile for Diethylphthalate;ATSDR,1995
3. Toxicologial Profile for di-n-octyphthalate;ATSDR,1997
4. Toxicological Profile for di-n-butyl Phthalate;ATSDR,2001
5. Toxicological Profile for di(2-ethylhexyl)phthalate(DEHP);ATSDR,2002