Structural behaviour of NC copper at hard cyclic viscoplastic deformationKommel, Lembit; Hussainova, Irina; Nisumaa, Reet; Volobujeva, OlgaUltrafine Grained Materials - from Basics to Applications : UFG-2006 : September 25-27, 2006, Kloster Irsee, Germany2006 / p. 6-16 - 6-17