TY - RPRT TI - Foil X-Ray Mirrors for Astronomical Observations: Still an Evolving Technology AU - Serlemitsos, Peter J. AU - Soong, Yang AU - Okajima, Takashi AU - Hahne, Devin J. PY - 2011 UR - https://ntrs.nasa.gov/citations/20110015479 ID - 20110015479 ER -