Zozulia L. Basics of the development of lead-free materials for shielding ionizing and non-ionizing electromagnetic radiation / L. Zozulia // Control, Navigation and Communication Systems. Academic Journal. – Poltava: PNTU, 2024. – VOL. 1 (75). – PP. 177-180. – doi:https://doi.org/10.26906/SUNZ.2024.1.177.