A comparison of channel access concepts for high-precision local positioning. - Ralf Mosshammer; Benjamin Waldmann; Ralf Eickhoff; Robert Weigel; Mario Huemer (WPNC, 2009)

An ultra-wideband local positioning system for highly complex indoor environments. - Benjamin Waldmann; Robert Weigel; Randolf Ebelt; Martin Vossiek (ICL-GNSS, 2012)