References
- Arvizu‐Torres , R. , Perez‐Castorena , A. , Salas‐Tellez , J. A. and Mitani‐Nakanishi , Y. 2001 . Biological and environmental reference materials in CENAM . Fresenius Journal of Analytical Chemistry , 370 : 156 – 160 .
- CIPM (International committee of Weights and Measure Sévre, France) . 1998 . National and International Needs Relating to Metrology 93 – 109 . BIPM .
- Kaarls , R. 2003 . “ Evolving needs for metrology in trade, industry and society ” . Available at http://www.bipm.org/en/convention/cgpm/kaarls2003.html
- Lopez , R. M. , Segoviano , F. , Arvizu , R. , Lara , V. , Mitani , Y. and Etchevers , J. 2004 . Proficiency tests conducted by laboratories of soil and plant analysis . Proceedings, International Symposium on Soil and Plant Analysis . 2004 . Philadelphia : Taylor and Francis .
- Mitani , Y. 2003 . Traceable measurements in materials characterization . Key Engineering Materials , 243–244 : 165 – 170 .