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Additional information
Institute of Mathematics, USSR Academy of Sciences. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 47, No. 3, pp. 323–332, June, 1981.
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Prikarpatskii, A.K. Almost periodic solutions of a modified nonlinear Schrödinger equation. Theor Math Phys 47, 487–493 (1981). https://doi.org/10.1007/BF01019299
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DOI: https://doi.org/10.1007/BF01019299