RACK, Heinz-Joachim. The first Zolotarev case in the Erdös-Szegö solution to a Markov-type extremal problem of Schur. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 62, n. 2, p. 151–162, 2017. DOI: 10.24193/subbmath.2017.2.02. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1770. Acesso em: 5 feb. 2025.