CHAMBERLAIN, John; KONG, Lingju; KONG, Qingkai. Nodal solutions of nonlocal boundary value problems. Mathematical Modelling and Analysis, [S. l.], v. 14, n. 4, p. 435–450, 2009. DOI: 10.3846/1392-6292.2009.14.435-450. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/6564. Acesso em: 2 jun. 2025.