1. Vibration of plates;Leissa;NASA SP-160,1969
2. On the free transverse vibrations of a uniform circular disc clamped at its centre and on the effect of rotation;Southwell,1922
3. The flexural vibrations of a square plate with a central circular hole;Kumai,1952
4. Dynamic stiffness in theory of axisymmetric vibrations of circular and annular plates;Sakharov;Izvestia An SSSR, ONT, Mekh. i Mashin,1959
5. Vibrations of plates of irregular shapes and plates with holes;Joga Rao;Journal of the Aeronautical Society of India,1961