Vitali Vougalter, Vitaly Volpert Existence of stationary solutions for some systems of integro-differential equations (124K, pdf) ABSTRACT. The article deals with the existence of solutions of a system of nonlocal reaction-diffusion equations which appears in population dynamics. The proof relies on a fixed point technique. Solvability conditions for elliptic operators in unbounded domains which fail to satisfy the Fredholm property are being used.