For citations:
Konopelko L.A., Kolobova A.V., Fatina O.V. The problem of improving the quality of seriously issued certified reference materials of the composition of gas mixtures. Measurement Standards. Reference Materials. 2019;15(3):5-13. (In Russ.) https://doi.org/10.20915/2077-1177-2019-15-3-5-13
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