Literature cited
Yu. I. Kovach, “An application of theorems on differential equations to Gurse's problem for a linear system of differential equations with partial derivatives,” Differents. Uravn.,1, No. 3, 411–420 (1965).
Yu. I. Kovach, “A proof of existence theorems and the uniqueness of the solution of Cauchy's problem by the method of two-sided approximation for a generalized 2n-wave system,” Zh. Vychisl. Mat. Mat. Fiz.,5, No. 3, 551–557 (1965).
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Yu. I. Kovach, “Modification of accelerated convergence to the solutions of a linear differential equation in partial derivatives with deflecting argument,” Ukr. Mat. Zh.,26, No. 5, 590–602 (1974).
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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 30, No. 2, pp. 165–175, March–April, 1978.
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Kovach, Y.I. A method of studying the convergence of an iterative process for nonlinear differential equations in partial derivatives. Ukr Math J 30, 125–132 (1978). https://doi.org/10.1007/BF01085630
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DOI: https://doi.org/10.1007/BF01085630