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Lytvyn, O.; Lytvyn, O.; Tkachenko, O.; Gritsay, O. Recovery of the Functions of Two Variables With Preservation of the Class Cr(R2) With the Help of Their Traces and the Traces of Their Derivatives up to a Fixed Order on the Given Curve. Dopov. Nac. akad. nauk Ukr. 2025, 50-55.