Literature cited
M. V. Kulakov et al., Technical Measurements and Analytical Instruments in the Chemical Industry [in Russian], Mashinostroenie, Moscow (1964).
M. M. Grinshtein and L. M. Kuchikyan, Photoelectric Concentration Meters for Automatic Control and Regulation [in Russian], Mashinostroenie, Moscow (1966).
Additional information
Translated from Izmeritel'naya Tekhnika, No. 8, p. 58, August, 1978.
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Buchinskii, Y.V., Stolyarov, A.A. & Yavorskii, B.I. Instrument for determining the difference between light fluxes. Meas Tech 21, 1110–1111 (1978). https://doi.org/10.1007/BF00825135
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DOI: https://doi.org/10.1007/BF00825135