Selektion in der Heilanstalt 1939-1945 Neuausgabe mit ergänzenden Texten Schmidt Gerhard Heftet / 2011 / Tysk
Topics in Acoustic Echo and Noise Control Selected Methods for the Cancellation of Acoustical Echoes, the Reduction of Background Noise, and Speech Processing Hänsler, Eberhard Innbundet / 2006 / Engelsk
Topics in Acoustic Echo and Noise Control Selected Methods for the Cancellation of Acoustical Echoes, the Reduction of Background Noise, and Speech Processing Hänsler, Eberhard Heftet / 2010 / Engelsk
