SEARCH Articles Figures Tables A- ] mixture Diffusion Estimation Diffusion in gases Diffusion in mixtures Diffusion of mixtures Diffusivity estimation Diffusivity of gases Estimates of gas Estimation of diffusivity in a gas mixture at low density Estimation of diffusivity in a gas mixture at low pressure Estimation—Gases Gas diffusivity Gas mixtures Gases diffusion Gases gas mixtures In estimates Mixture of gases