We review feasibility studies, technological developments and astrophysical
prospects for Laue lenses devoted to hard X-/gamma-ray astronomy observations.Comment: 26 pages, 24 figures. Published in a special issue (Volume 2010
(2010), Article ID 215375, doi:10.1155/2010/215375) of the on-line journal
"X-Ray Optics and Instrumentation", devoted to "X-Ray Focusing: Techniques
and Applications