1. Cisco: Cisco Visual Networking Index: Global Mobile Data Traffic Forecast Update, 2015–2020 White Paper (Cisco Systems Inc., San Jose 2016)
2. A. Brandt: Noise and Vibration Analysis: Signal Analysis and Experimental Procedures (Wiley, Chichester 2011)
3. E.S. Gopi: Digital Signal Processing for Medical Imaging Using MATLAB (Springer, New York 2013)
4. U. Zölzer, X. Amatriain, D. Arfib, J. Bonada, G. De Poli, P. Dutilleux, G. Evangelista, F. Keiler, A. Loscos, D. Rocchesso, M. Sandler, X. Serra, T. Todoroff: DAFX: Digital Audio Effects (Wiley, Chichester 2002)
5. M. Holters, U. Zölzer: Physical modelling of a wah-wah effect pedal as a case study for application of of the nodal DK method to circuits with variable parts. In: Proc. 14th Int. Conf. Digit. Audio Eff. DAFx-11 (2011) pp. 31–35