COSKUN, H.; BASKAYA, E. Asymptotics of eigenvalues of regular Sturm-Liouville problems with eigenvalue parameter in the boundary condition for integrable potential. MATHEMATICA SCANDINAVICA, [S. l.], v. 107, n. 2, p. 209–223, 2010. DOI: 10.7146/math.scand.a-15152. Disponível em: https://www.mscand.dk/article/view/15152. Acesso em: 3 jul. 2024.