Fernanda M. Bastos and  TeĆ³genes A. da Silva,  Characterization of an Extrapolation Chamber for Dosimetry of Low Energy X-Ray Beams .   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2016, vol. 118(10). 517 - 520
    [viewed 02 December 2021]. Available from: https://publications.waset.org/pdf/10005648.