Didkovskiy, V. , Luneva, S. and Zayets, V. 2011. Study of the acoustic characteristics of the bell "Mazepa" Sophia Cathedral (Kyiv). Electronics and Communications. 16, 2 (Mar. 2011), 146–152. DOI:https://doi.org/10.20535/2312-1807.2011.16.2.268333.