1. Delfs, J.W., Bauer, M., Ewert, R., Grogger, H.A., Lummer, M., Lauke, T.G.W.: Numerical simulations of aerodynamic noise with DLRs aeroacoustic code PIANO, Version 5.2, 2008
2. Ewert, R., Bauer, M., Lummer, M.: A review of state-of-the-art aeroacoustic prediction approaches. In: Dénos, R., Lecomte, E., Kors, E., Schram, C. (eds):Aircraft Noise, Monograph VKI Lecture Series 2012-02. von Kármán Institute for Fluid Dynamics, Brussels (2012)
3. Moghadam, M.S.A.: Implementation of viscous terms into the computational aeroacoustics code PIANO. MSc. thesis TU Braunschweig (2012)
4. Bailly, C., Bogey, C., Marsden, O.: Progress in direct noise. Int. J. Aeroacoust. 9, (2010)
5. Terracol, M.: A zonal RANS/LES approach for noise sources prediction. Flow Turbul. Combust. 77, (2006)