LAZOPOULOS, K.; LAZOPOULOS, A. On Λ-fractional variational calculus. Annals of Mathematics and Physics, [S. l.], v. 6, n. 1, p. 036–040, 2023. DOI: 10.17352/amp.000074. Disponível em: https://www.peertechzpublications.us/amp/article/view/AMP-6-174. Acesso em: 10 jan. 2025.