Olefir E. I. On a class of finite-dimensional perturbations of dissipative Volterra operators / E. I. Olefir, A. A. Tarasenko // Methods of Functional Analysis and Topology. - 2005. - 11, № 1. - С. 65-72. - Бібліогр.: 5 назв. - англ.
In this article we derive criteria for a similarity between finite dimensional perturbations of integral Volterra operators with special kernels and normal operators. An application to the problem of description of unconditional bases which are constructed with the help of a given set of matrix exponentials is considered.