1. Standard Guide for Handling Unbound Engineered Nanoscale Particles in Occupational Settings. ASTM, E2535 – 07, ICS Number Code 71.100.01;ASTM Subcommittee E56.03,2007
2. The potential risks of nanomaterials: a review carried out for ECETOC;Borm,2006
3. Part 2: Guide to safe handling and disposal of manufactured nanomaterials. PD 6699 -2;British Standards Institute. Nanotechnologies,2007
4. The potential environmental impact of engineered nanomaterials;Colvin;Nat Biotechnol,2003
5. Ultrafine particles;Donaldson;Occup Environ Med,2001