1. 1) Wu, J. H. and Sun, M., Unsteady Aerodynamic Forces of a Flapping Wing, Journal of Experimental Biology, 207 (2004), pp. 1137-1150.
2. 2) Dickinson, M. H. and Sane, S. P., The Control of Flight Force by Flapping Wing: Lift and Drag Production, Journal of Experimental Biology, 204 (2001), pp. 2607-2626.
3. 3) Wang, Z. J., Two Dimensional Mechanism for Insect Hovering, Physical Review Letters, Vol. 85, No. 10 (2000), pp. 2216-2219.
4. 4) Platzer, M. F. and Jones, K. D., Experimental Investigation of the Aerodynamic Characteristics of Flapping-wing Micro Air Vehicles, AIAA Paer2003-0418 (2003), pp. 1-11.
5. 5) Izumi, K., Study on Fluid Dynamic Forces and Flow Structure around Impulsively Started Bodies, AIAA Paper2003-0230, (2003), pp.1-11