High efficiency and low absorption Fresnel compound zone plates for hard X-ray focusing - A. Kuyumchyan; A. Isoyan; E. Shulakov; V. Aristov; M. Kondratenkov; A. Snigirev; I. Snigireva; A. Souvorov; K. Tamasaku; M. Yabashi; T. Ishikawa; K. Trouni (CoRR, 2005)