Srimud, ‪Kulprapa, Suton Tadee, and Vichian Laohakosol. “Polynomials With Only Real Zeros”. Progress in Applied Science and Technology 1, no. 1 (August 23, 2011): 39–44. Accessed May 10, 2024. https://ph02.tci-thaijo.org/index.php/past/article/view/243266.