Nguyen , H.Q., Hoang , S.T., Duong , D.T. and Pham , K.L. 2019. Effects of number of simulated particles on the uncertainty in simulation of dispersion of radioactive material using FLEXPART program. Nuclear Science and Technology. 9, 1 (Mar. 2019), 21-27. DOI:https://doi.org/10.53747/jnst.v9i1.56.