Subrahmanyam, P. Bala; Sujith, R. I. Exact solutions for axisymmetric vibrations of solid circular and annular membranes with continuously varying density. (English) Zbl 1237.74086 J. Sound Vib. 248, No. 2, 371-378 (2001). MSC: 74H45 Vibrations in dynamical problems in solid mechanics PDFBibTeX XMLCite \textit{P. B. Subrahmanyam} and \textit{R. I. Sujith}, J. Sound Vib. 248, No. 2, 371--378 (2001; Zbl 1237.74086) Full Text: DOI