References
- Arvizu‐Torres , R. , Pérez‐Castorena , A. , Salas‐Téllez , J. A. and Mitani‐Nakanishi , Y. 2001 . Biological and environmental reference materials in CENAM . Fresenius Journal of Analytical Chemistry , 00819 : 1 – 4 .
- De Bièver , P. and Peiser , H. S. 1997 . The reliability of values of molar mass, the factor that relates measurements expressed in two SI base units (mass and amount of substance) . Metrologia , 34 : 49 – 59 .
- Ellison , S. L.R. , Rosslein , M. and Williams , A. 2000 . Eurachem‐Citac Guide Quantifying Uncertainty in Analytical Measurement , 2nd ed. 4 – 31 . Eurachem, , UK : Department of Trade and Industry, National Measurement System Valid Analytical Measurement Programme .
- ISO (International Organization for Standardization) . 1989 . “ Guide 35, certification of reference material ” . In General and Statistical Principles , 2nd ed. 32 – 46 . Geneva, , Switzerland : ISO .
- ISO (International Organization for Standardization) . 1993 . International Vocabulary of Basic and General Terms in Metrology , 2nd ed. 25 Geneva, , Switzerland : ISO .
- ISO (International Organization for Standardization) . 1995 . Guide to the Expression of Uncertainty in Measurement 2 – 27 . Geneva, , Switzerland : ISO .
- ISO (International Organization for Standardization) . 2000 . Guide 34, General Requirements for the Competence of Reference Material Producers 9 – 17 . Geneva, , Switzerland : ISO .
- Levenson , M. S. , Banks , D. L. , Eberhardt , K. R. , Gill , L. M. , Guthrie , W. F. , Liu , H. K. , Vangel , M. G. , Yen , J. H. and Zhang , N. F. 2000 . An approach to combining results from multiple methods motivated by the ISO guide of uncertainty measurement . Journal of Research of the National Institute of Standard and Technology , 105 : 571
- López , R. R.M. , Etchevers , B. J.D. , Vaquera , H. and Hidalgo , C. 2002 . Interlaboratory comparison of plant analysis accuracy in Mexico . Communications in Soil Science and Plant Analysis , 33 : 2729 – 2737 .
- Mitani , N. Y. and Perez‐Castorena , A. 2003 . Practical ways in establishing traceability in chemical and other measurements in Mexico . Accred Qual Assur. , 8 : 461 – 466 .
- Mavrodineanu , R. and Alvarez , R. 1985 . Summary of the Biological and Botanical Standards Issued by the National Bureau of Standards 8 – 10 . Gaithersburg, Maryland : U.S. Department of Commerce, National Bureau of Standards .