P. . Oonsiri, C. . Vannavijit, M. . Vimolnoch, N. . Chatchumnan, and S. . Kingkaew, “Door gamma and neutron survey for TrueBEAM 10 MV with and without flattening filter free mode”, J Thai Assn of Radiat Oncol, vol. 28, no. 2, pp. R1-R11, Sep. 2022.