1. A.W. Leissa, Vibration of Plates, NASA SP-160, 1969.
2. Note on forced vibration of a thin nonhomogeneous circular plate with central hole;Bose;Indian Journal of Physics,1967
3. Note on the torsional vibration of a finite circular cylinder of nonhomogeneous material by a particular type of twist on one of the plane surface;Biswas;Indian Journal of Physics,1969
4. The plane problem for a nonhomogeneous elastic circular domain;Rostovtsev;Journal of Applied Mechanics,1973
5. Vibration of nonhomogeneous plates using two-dimensional orthogonal polynomials as shape functions in the Rayleigh–Ritz method;Chakraverty;Journal of Mechanical Engineering Science,1999