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2. 3rd Int. Conf. on Vehicle System Dynamics, Session V, Vehicular Aerodynamic Effects,1974
3. Reduction of the aerodynamic drag of trucks, NSF-RANN Conf.,1974
4. Wind-tunnel development of the drag foiler: a system for reducing tractor—trailer aerodynamic drag;Mason;Soc. Aeronaut. Eng., Pap. 750705,1975
5. Directional stability of motor vehicles;Kamm,1953