JONNALAGADDA, Jagan Mohan. Existence theory for nabla fractional three-point boundary value problems via continuation methods for contractive maps. Topological Methods in Nonlinear Analysis, [S. l.], v. 61, n. 2, p. 869–888, 2023. DOI: 10.12775/TMNA.2022.043. Disponível em: https://apcz.umk.pl/TMNA/article/view/45120. Acesso em: 10 dec. 2025.