Separation of variables in the two-dimensional wave equation with potential von Zhdanov, R.Z., Revenko, I.V., Fushchych, W.I.

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Separation of variables in two-dimensional wave equations with potential von Fushchich, V. I., Revenko, I. V., Zhdanov, R. Z., Фущич, В. І., Ребенко, І. В., Жданов, Р. З.

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