Multidimensional integral operators with bihomogeneous kernels: A projection method and pseudospectra. Avsyankin, O.G. — 2006 Sibirskij Matematicheskij Zhurnal
The spectra and singular values of multidimensional integral operators with bihomogeneous kernels. Avsyankin, O.G. — 2008 Sibirskij Matematicheskij Zhurnal