1. Osaka slow fliers club.
http://blog.goo.ne.jp/flappingwing
2. S. Avadhanula, R.J. Wood, E. Steltz, J. Yan, R.S. Fearing, Lift force improvements for the micromechanical flying insect, in IEEE International Conference on Intelligent Robots and Systems, 28-30 Oct 2003, Las Vegas NV (2003)
3. W. Bejgerowski, A. Ananthanarayanan, D. Mueller, S.K. Gupta, Integrated product and process design for a flapping wing drive-mechanism. ASME J. Mech. Design 131 (2009)
4. O. Chanute, Progress in Flying Machines (Dover, 1894, reprinted 1998)
5. Toki Corporation.
http://www.toki.co.jp/