Oliveira, Estela Maria, Akira Iwahara, Roberto Poledna, Carlos José da Silva, Paulo Alberto Lima da Cruz, Regio dos Santos Gomes, José Ubiratan Delgado, and Ricardo Tadeu Lopes. “Sum-Peak Method With Two NaI(Tl) Crystals: 68(Ge+Ga) Standardization”. Brazilian Journal of Radiation Sciences 7, no. 3B (Suppl.) (October 24, 2019). Accessed December 26, 2024. https://bjrs.org.br/revista_33014/index.php/REVISTA/article/view/862.