1. Zhang Chenglin , Zhang Xiaogu , Guo Shilong . Helicopter component design. Nanjing ; Nanjing University of Aeronautics and Astronautics . 1986 . (in Chinese) Zhang Chenglin, Zhang Xiaogu, Guo Shilong. Helicopter component design. Nanjing; Nanjing University of Aeronautics and Astronautics. 1986. (in Chinese)
2. Zhang Xiaogu . Helicopter Dynamic Design. Beijing ; Aviation Industry Press . 1995 . (in Chinese) Zhang Xiaogu. Helicopter Dynamic Design. Beijing; Aviation Industry Press. 1995. (in Chinese)
3. Dynamic anti-resonance vibration isolation;Zhongquan Gu;Noise and Vibration Control.
4. Gaffey T M , Balke R W. SAE Technical Paper Series [SAE International Aerospace Engineering and Manufacturing Meeting - (NOV. 30, 1976 )] SAE Technical Paper Series - Isolation of Rotor Induced Vibration with the Bell Focal Pylon-Nodal Beam System. 1976 .1 Gaffey T M, Balke R W. SAE Technical Paper Series [SAE International Aerospace Engineering and Manufacturing Meeting - (NOV. 30, 1976)] SAE Technical Paper Series - Isolation of Rotor Induced Vibration with the Bell Focal Pylon-Nodal Beam System. 1976.1
5. Balke R.W. Development of the Kinematic Focal Isolation System for Helicopter Rotors. 38th Shock and Vibration Symposium. 1968 . Balke R.W. Development of the Kinematic Focal Isolation System for Helicopter Rotors. 38th Shock and Vibration Symposium. 1968.