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 . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 2, p. 50–55, 2025. DOI: 10.15407/dopovidi2014.02.050. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/17437. Acesso em: 10 may. 2026.