https://phaidra.kug.ac.at/o:67609 Directivity and Electro-Acoustic Measurements of the IKO Zaunschirm, Markus Markus Zaunschirm other eng IRs of directivity and vibration measurements of the IEM IKOs 1-3 https://phaidra.kug.ac.at/o:67857 2018-03-13