dos Santos, Ramon Silva, Davi Ferreira de Oliveira, Joaquim Teixeira de Assis, and Marcelino José dos Anjos. “Portable Grazing Exit X-Ray Fluorescence System Using a Low-Power X-Ray Tube”. Brazilian Journal of Radiation Sciences 7, no. 2A (Suppl.) (February 25, 2019). Accessed November 9, 2024. https://bjrs.org.br/revista_33014/index.php/REVISTA/article/view/714.