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Additional information
Institute of Theoretical Physics, Academy of Sciences of the Ukrainian SSR. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 18, No. 1, pp. 90–107, January, 1974.
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Vakarchuk, N.A., Yukhnovskii, I.R. Sevaration of “normal” and “superfluid” mctions in the schrodinger equation by means of the method of displacements and collective variables. Theor Math Phys 18, 63–75 (1974). https://doi.org/10.1007/BF01036928
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DOI: https://doi.org/10.1007/BF01036928