1. Cali JP, Mears TW, Michaelis RE, Reed WP, Seward RW, Stanley CL, Yolken HT, Ku HH (1975) The role of standard reference materials in measurement systems. National Bureau of Standards Monograph 148. Washington, DC
2. Cantillo AY (1988) Standard and reference materials for use in marine science. National Oceanic and Atmospheric Administration, Rockville, MD, in press
3. Community Bureau of Reference (BCR) (1983, 1985, no date) Catalogue of BCR Reference Materials; Addendum to Catalogue, BCR Reference Materials, Brussels
4. Fukai R, Oregioni B, Vas D (1978) Oceanol Acta 1:391–396
5. Huntoon RD (1975) In: Seward RW (ed) Standard reference materials and meaningful measurements. National Bureau of Standards Spec Publ 408, Washington, DC, pp 4–56