Submillimeter-resolution radiography of shielded structures with laser-accelerated electron beams oleh Vidya Ramanathan, Sudeep Banerjee, Nathan Powers, Nathaniel Cunningham, Nathan A. Chandler-Smith, Kun Zhao, Kevin Brown, Donald Umstadter, Shaun Clarke, Sara Pozzi, James Beene, C R Vane, David Schultz