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2. Mitteilungsblatt, No. 354, Deutschen Amts für Messwesen DDR (1965).
3. S. I. Gauzner et al., Measurement of Mass, Volume, and Density [in Russian], Izd. Standartov, Moscow (1972).
4. A. N. Pavlovskii, Flow-Rate and Volume Measurements on Liquids, Gases, and Vapors [in Russian], Izd. Standartov, Moscow (1967).
5. A. N. Pavlovskii, Izmeritel'. Tekh., No. 4 (1974).