Affiliation: | (1) The Institute for Superhard Materials, Ukrainian Academy of Sciences, 2 Avtozavodskaya Street, 254 153 Kiev, Ukraine;(2) The Institute for Problem of Strength, Ukrainian Academy of Sciences, 2 Timiryazevskaya Street, 252014 Kiev, Ukraine;(3) The Institute of General Physics, Russian Academy of Sciences, 38 Vavilov Street, 117942 Moscow, Russia |