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Additional information
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 29, No. 5, pp. 943–948, November, 1978.
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Sid'ko, A.F., Filimonov, V.S., Sid'ko, F.Y. et al. Field double-beam difference spectrophotometer. J Appl Spectrosc 29, 1412–1416 (1978). https://doi.org/10.1007/BF00604784
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DOI: https://doi.org/10.1007/BF00604784