1. Hushon J, Clerman R, Wagner B (1979) Tiered testing for chemical hazard assessment. Environ Sci Technol 13:1202–1207
2. Society of Toxicology (2005) How do you define toxicology? Soc Toxicol Commun. http://www.toxicology.org/ai/pub/si05/SI05_Define.asp
3. NSET/NEHI (2011) NNI environmental, health, and safety research strategy fact sheet. http://nano.gov/sites/default/files/pub_resource/2011_ehs_strategy_fact_sheet_locked.pdf
4. Forrest DR (2001) Molecular nanotechnology. IEEE Instrum Meas Mag 4(3):11–20
5. Lecoanet H, Wiesner MR (2004) Assessment of the mobility of nanomaterials in groundwater acouifers. Abs Pap Am Chem Soc 227:U1275–U1275