1. Hazards of prophecy: the failure of imagination;Clarke,1962
2. Cosmetics break the skin barrier;Deutsch;NY Times,2005
3. Nano nano on the wall;Matlack;Bus Week,2005
4. Engines of creation: the coming era of nanotechnology;Drexler,1984
5. Toxic potential of materials at the nanolevel;Nel;Science,2006