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Copyright (c) 2004 Vladimir Bukh, Elena Grigoryeva, Alexander Kolesnikov, Vladimir Stegaylo, Alexey Buynov, Nikolai Zhukovsky, Inna Druzhinina, Natalya Sherstova, Alexander Gladkov, Galina Urlapova, Khadicha Dulatova

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This work is licensed under a Creative Commons Attribution 4.0 International License.