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作者单位:G. E. Grishanina (1) <br> N. G. Inozemtseva (1) <br> M. B. Sadovnikova (2) <br><br>1. International University of Nature, Society, and the Human 鈥淒ubna,鈥? Dubna, Russia <br> 2. Faculty of Physics, Moscow State University, Moscow, 119991, Russia <br>