Existence and uniqueness for a fractional differential equation involving Atangana-Baleanu derivative by using a new contraction. Letters in Nonlinear Analysis and its Applications, [S. l.], v. 1, n. 2, p. 52–56, 2023. DOI: 10.66147/lnaa.20231206. Disponível em: https://lettersinnonlinearanalysis.com/index.php/lnaa/article/view/v1n2a06. Acesso em: 10 jun. 2026.