T. S. Nikolova, D. D. Bainov, “Theorems on the existence and uniqueness of the solution of certain systems of integro-differential equations of superneutral type”, Izv. Vyssh. Uchebn. Zaved. Mat., 1978, no. 1, 75–80; Soviet Math. (Iz. VUZ), 22:1 (1978), 60–64
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