HAO, Xinan; ZHANG, Luyao; LIU, Lishan. Positive solutions of higher order fractional integral boundary value problem with a parameter. Nonlinear Analysis: Modelling and Control, [S. l.], v. 24, n. 2, p. 210–223, 2019. DOI: 10.15388/NA.2019.2.4. Disponível em: https://www.journals.vu.lt/nonlinear-analysis/article/view/12898.. Acesso em: 6 may. 2024.