For citations:
Vasil’eva I.E., Shabanova E.V. Plant-matrix reference materials as a tool for ensuring the uniformity of chemical measurements in geochemistry, ecology, agriculture and pharmacology. Measurement Standards. Reference Materials. 2021;17(2):33-47. (In Russ.) https://doi.org/10.20915/2687-0886-2021-17-2-33-47
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