Zakharov A, Saltikov I. SETTING UP A PROBLEM OF AIR-BORNE SOUND IN-SULATION CALCULATION FOR DOUBLE LAYER MASSIVE ENCLOSURES ON THE BASE OF THE MODELS WITH THE CONCENTRATED PARAMETERS. IJCCSE [Internet]. 2020 Dec. 28 [cited 2026 Nov. 15];16(4):111-20. Available from: https://ijccse.iasv.ru/index.php/ijccse/article/view/326