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Georgii Timofeevich Zatsepin (on his eightieth birthday)a Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation b Institute for Nuclear Research, Russian Academy of Sciences, prosp. 60-letiya Oktyabrya 7a, Moscow, 117312, Russian Federation c Nuclear Physics Division, Russian Academy of Sciences, Leninskii prosp. 32a, Moscow, 117993, Russian Federation
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