1. Effect of periodic changes of angle of attack on behavior of airfoils;Katzmayr;NACA TM,1922
2. Wingmill: an oscillating-wing windmill;McKinney;J. Energy,1981
3. Parametric study of an oscillating airfoil in a power-extraction regime;Kinsey;AIAA J.,2008
4. Experiments in direct energy extraction through flapping foils;Simpson,2008
5. Experimental Studies of Flapping Foils for Energy Extraction;Simpson,2009