6Gerd Matschke,Christoph Heine.Full Scale Tests on Side Wind Effects on Trains.Evaluation of Aerodynamic Coefficients and Efficiency of Wind Breaking Devices [J].Notes on Numerical Fluid Mechanics and Muhidis- ciplinary Design (NNFM),2002,79:27-38.
7Araujo A D,Andrade J S,Maia L P,et al.Efficiency of sediment samplers for wind erosion measurement Ill. Granular Matterr,2009(9):l 31-139.
8Bagnold R A.The physics of blown sand and desert dunes[M].London:Methuen,1941:255-259.