GORODETSKII, V.; VEREZHAK, G. The nonlocal by time problem for evolutionary singular equations of infinite order . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 8, p. 3–11, 2024. DOI: 10.15407/dopovidi2018.08.003. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/2915. Acesso em: 18 apr. 2026.