L. Cremer and H. A. Müller, Die wissenschaftlichen Grundlagen der Raumakustik, volume Band II, 1978.

H. Dujourdy, B. Pialot, T. Toulemonde, and J. D. Polack, An energetic wave equation for modelling diffuse sound fields -application to corridors, Acta Acustica, vol.103, pp.480-491, 2017.

H. Dujourdy, B. Pialot, T. Toulemonde, and J. D. Polack, An energetic wave equation for modelling diffuse sound fields -application to open offices, Wave Motion, 2018.

W. Janowsky and F. Spandöck, Aufbau und Untersuchungend eines schallgedämpften Raumes, Akust. Z, vol.2, pp.322-331, 1937.

B. Linet, Notes de cours de relativité générale, pp.2004-2009

M. Philip, K. U. Morse, and . Ingard, Theoretical Acoustics. Mc Graw, 1968.

K. B. Rasmussen, Propagation of road traffic noise over level terrain, J. Sound & Vib, vol.82, pp.51-61, 1982.

. Wikipedia, Kaluza-klein theory, 2018.