Li, Y. , Ma, H. , Sun, Q. , Zhang, H. , Ying, W.. "Cold Model Experimental Research on Particle Velocity Distribution in Gas-Solid Circulating Fluidized Bed for Methanol-to-Olefins Process". World Academy of Science, Engineering and Technology, Open Science Index 103, International Journal of Chemical and Molecular Engineering, (2015), 9(7), 829 - 833.