  In this paper we propose new sufficient conditions for stability of solutions
of systems of Volterra linear integral equations and systems of linear
integro-differential Volterra equations. Solution stability conditions for
systems of Volterra linear integral equations are studied with perturbed right
hand sides of the equations. These new sufficient conditions are expressed in
terms of logarithmic norms of matrices consisting of coefficients of equations
and derivatives of their kernels. For integro-differential Volterra equations
we also provide sufficient conditions for stability of solutions when the
initial conditions are perturbed.
