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Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 3, pp. 97–101, May–June, 1991.
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Davydov, A.R., Levin, V.M., Pervadchuk, V.P. et al. Study of two-layer flow of viscoelastic molten polymers in axisymmetrical channels. J Appl Mech Tech Phys 32, 390–394 (1991). https://doi.org/10.1007/BF00852145
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DOI: https://doi.org/10.1007/BF00852145