Affiliation: | 1. Technological Institute of Superhard and New Carbon Materials, Troitsk, Russia 2. National Nuclear Research University ?C Moscow Engineering-Physics Institute (NIYaU MIFI), Moscow, Russia 3. Moscow Institute of Physics and Technology (MFTI), Dolgoprudnyi, Russia 4. All-Russia Research Institute of Metrological Service (VNIIMS), Moscow, Russia
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