373document39PMD_equation_comarison_Eqn_3_v_Gao.bmpimage/x-ms-bmpf7c3661792356c68728ae8a61827bbd4MD53427742016-11-14 09:28:53https://researchdata.aston.ac.uk/id/eprint/148/2/PMD_equation_comarison_Eqn_3_v_Gao.bmp