CHO, N. E.; OWA, S. On the Fekete-Szego problem for strongly $ \alpha $-quasiconvex functions. Tamkang Journal of Mathematics, [S. l.], v. 34, n. 1, p. 21–28, 2003. DOI: 10.5556/j.tkjm.34.2003.269. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/269. Acesso em: 5 jul. 2022.