1. R. P. Feynman, There's plenty of room at the bottom, Engineering and Science (California Institute of Technology), p. 22, Feb. 1960.
2. Proc. International Conf., Prod. Eng;Taniguchi,1974
3. Molecular engineering: An approach to the development of general capabilities for molecular manipulation, Proc;Drexler;National Academy of Sciences,1981
4. Engines of creation: The coming era of nanotechnology;Drexler,1986