Performance of a Medipix3RX Spectroscopic Pixel Detector With a High Resistivity Gallium Arsenide Sensor. - Elias Hamann; Thomas Koenig; Marcus Zuber; Angelica Cecilia; Anton Tyazhev; Oleg Tolbanov; Simon Procz; Alex Fauler; Tilo Baumbach; Michael Fiederle (IEEE Trans. Medical Imaging, 2015)