Shevchenko, Y. S., O. M. Beregovoj, A. A. Kozlitin, and O. Y. Kravchuk. “ESTIMATION METHODS FOR ACOUSTIC IMPROVEMENT OF ROOMS USING MEASUREMENTS OF REVERBERATION TIME”. Proceedings of National Aviation University, vol. 35, no. 2, Feb. 2008, pp. 73-77, doi:10.18372/2306-1472.35.1570.