1. http://www.rc.mce.uec.ac.jp/
2. http://www.bu.edu/me/people/faculty/pz/wang/
3. Nonami, K.: Rotating Wing Aerial Robotics. Journal of the Robotics Society of Japan 24(8), 890–896 (2006)
4. Sugeno, M., et al.: Intelligent Control of an Unmanned Helicopter Based on Fuzzy Logic. In: Proc. of American Helicopter Society 51st Annual Forum, Texas (May 1995)
5. Sugeno, M.: Development of an Intelligent Unmanned Helicopter. In: Nguyen, H.T., Prasad, N.R. (eds.) Fuzzy Modeling and Control: Selected Works of M. Sugeno. CRC Press (1999)