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- [6] CRMs for quality control of determinations of chemical forms of elements in support to EU legislation FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1996, 354 (5-6): : 515 - 520
- [8] METHYL MERCURY DETERMINATION IN ENVIRONMENTAL AND BIOLOGICAL REFERENCE AND OTHER MATERIALS BY QUALITY-CONTROL WITH CERTIFIED REFERENCE MATERIALS (CRMS) FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1993, 346 (6-9): : 686 - 688