M. H. GULZAR; A. W. MANZOOR. A Ring-shaped Region for the Zeros of a Polynomial. Mathematical Journal of Interdisciplinary Sciences, [S. l.], v. 4, n. 2, p. 177–182, 2016. DOI: 10.15415/mjis.2016.42015. Disponível em: https://mjis.chitkara.edu.in/index.php/mjis/article/view/89. Acesso em: 29 apr. 2024.