KALEV, Krasimir; MANOV, Lyubomir. A PRELIMINARY STUDY OF PHOTON RADIATION ATTENUATION FROM BALLISTIC PROTECTION MATERIALS. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 4, p. 160–163, 2024. DOI: 10.17770/etr2024vol4.8221. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/8221.. Acesso em: 23 nov. 2024.