Zuchi, Chen et Chunlin, Qian, Hile-Yeh Estimates of Eigenvalues of Polyharmonic Operators, Acta Mathematica Sinica, New Series Chinese Journal of Mathematics, 9(4), 1993, pp. 432-437
The new bounds of eigenvalues of polyharmonic operators are deduced. This work is a generalization of some kind of estimates of the biharmonic operator.