1. Recent developments in rotary wing aero-elasticity;Friedmann,1976
2. Nonlinear equations of motion for the elastic bending and torsion of twisted nonuniform rotor blades;Hodges;National Aeronautics and Space Administration Technical Note D-7818,1974
3. Nonlinear equations of equilibrium for elastic helicopter or wind turbine blades undergoing moderate deformation;Rosen;University of California Los Angeles UCLA-ENG-771B,1977
4. Nonlinear flap-lag-axial equations of a rotating beam with arbitrary precone angle;Kvaternik;American Institute of Aeronautics and Astronautics Paper No. 78-491,1978
5. On the axial vibrations of a whirling bar;Bhuta;Journal of the Acoustical Society of America,1965