Almeida Jr, J.N., Terini, R.A., Pereira, M.A.G. e Herdade, S.B. 2015. Calibration of PKA meters against ion chambers of two geometries. Revista Brasileira de Física Médica. 5, 1 (out. 2015), 15–20. DOI:https://doi.org/10.29384/rbfm.2011.v5.n1.p15-20.