%0 conference lecture %@ %A Weidner, A., Amberger, D., Pyczak, F., Schoenbauer, B., Stanzl-Tschegg, S., Mughrabi, H. %D 2008 %J 17th European Conference on Fracture, ECF 17 %T Fatigue damage in copper polycrystals subjected to ultrahigh-cycle fatigue below the PSB threshold %U %X