MIKHAILETS, V.; PELEKHATA, O.; REVA, N. On the Kiguradze theorem for linear boundary-value problems . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 12, p. 8–13, 2024. DOI: 10.15407/dopovidi2017.12.008. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/7829. Acesso em: 9 may. 2026.