• Gopalakrishnan S. Spectral Finite Element Method Wave Propagation, Diagnostics and Control in Anisotropic and Inhomogeneous Structures / / by S. Gopalakrishnan, A. Chakraborty, D. Roy Mahapatra. // Springer eBooks. URL: http://dx.doi.org/10.1007/978-1-84628-356-7