Lytvyn, O., Lytvyn, O., Tkachenko, O. and Gritsay, O. 2025. 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 . Reports of the National Academy of Sciences of Ukraine. 2 (Mar. 2025), 50–55. DOI:https://doi.org/10.15407/dopovidi2014.02.050.