1. A retreat from SI units;Campion, E.W.;N Estgl J Med,1992
2. Americans retreat on SI units;Nylenna, M.; Smith, R.;BAI),1992
3. Oninibtus Trade anid Caonpestitiveness Act of 1988. 100th Cong; HR4848,1988
4. Aletric iusage in federal govertninent progranis,1991
5. "A metric America: a decision whose time has come"-for real;Carser, G.P.,1992