S. K. Panda and B. N. Singh,"Nonlinear free vibration of spherical shell panel using higher order shear deformation theory – A finite element approach", International Journal of Pressure Vessels and Piping, vol.86, no.6, pp.373-383, Elsevier 2009, 10.1016/j.ijpvp.2008.11.023       Article

S. K. Panda and B. N. Singh,"Non-linear free vibration analysis of laminated composite cylindrical/hyperboloid shell panels based on higher-order shear deformation theory using non-linear finite-element method", Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, vol.222, no.7, pp.993-1006, Sage 2008, 10.1243/09544100JAERO358       Article