No1980
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V. J. Novoksenov, Asymptotic behaviour as $t \to \infty$ of the solution to the Cauchy problem for a nonlinear Schr\"odinger equation (Russian), Dokl. Akad. Nauk SSSR 251 (1980), 799-802.
V. J. Novoksenov, Asymptotic behaviour as $t \to \infty$ of the solution to the Cauchy problem for a nonlinear Schr\"odinger equation (Russian), Dokl. Akad. Nauk SSSR 251 (1980), 799-802.