S. BHAYA, Eman; Z.ABD AL-SADA, Nada. Whitney theorem for copositive approximation in. Journal of Al-Qadisiyah for Computer Science and Mathematics, [S. l.], v. 7, n. 2, p. 111–125, 2017. Disponível em: https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/69. Acesso em: 15 nov. 2024.