System and signal design for an energy-efficient multi-frequency localization system. - Thorsten Nowak; Martin Hierold; Alexander Koelpin; Markus Hartmann; Hans-Martin Troger; Jörn Thielecke (WiSNet, 2014)

Protocol design for ultra-low power wake-up systems for tracking bats in the wild. - Falko Dressler; Bastian Bloessl; Martin Hierold; Chia-Yu Hsieh; Thorsten Nowak; Robert Weigel; Alexander Koelpin (ICC, 2015)

Low-weight wireless sensor network for encounter detection of bats. - Martin Hierold; Simon Ripperger; Darija Josic; Frieder Mayer; Robert Weigel; Alexander Koelpin (WiSNet, 2015)

Low-weight wireless sensor node for animal encounter detection and dual-band localization. - Martin Hierold; Markus Hartmann; Simon Ripperger; Frieder Mayer; Albert Heuberger; Robert Weigel; Alexander Koelpin (WiSNet, 2016)

From radio telemetry to ultra-low-power sensor networks: tracking bats in the wild. - Falko Dressler; Simon Ripperger; Martin Hierold; Thorsten Nowak; Christopher Eibel; Björn Cassens; Frieder Mayer; Klaus Meyer-Wegener; Alexander Koelpin (IEEE Commun. Mag., 2016)

Automated Encounter Detection for Animal-Borne Sensor Nodes. - Björn Cassens; Simon Ripperger; Martin Hierold; Frieder Mayer; Rüdiger Kapitza (EWSN, 2017)