On bounded solutions of a class of nonlinear integral equations on the plane and the Urysohn equation in a quadrant of the plane за авторством Khachatryan , Kh. A., Petrosyan , H. S., Хачатрян, Х. А., Петросян, А. С., Хачатрян, Х. А., Петросян , А. С.

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