Siddiqua, T., M. S. Rahman, M. Sanaullah, Z. A. Mitu, I. Hossain, and S. S. Rubai. “Determination of Calibration X-Ray Beam Qualities and Establish a Set of Conversion Coefficients for Calibration of Radiation Protection Devices Used in Diagnostic Radiology”. East European Journal of Physics, no. 3, Sept. 2021, pp. 55-61, doi:10.26565/2312-4334-2021-3-08.