Barreto, F. C. P., dos Santos, M. A. P., de Lima, F. F., & Oliveira, M. L. (2011). Intercomparison measurements of activity of 99mTc and 131I in Nuclear Medicine Services in the city of Recife. Scientia Plena, 3(7). Retrieved from https://www.scientiaplena.org.br/sp/article/view/656