Abdullah, Abdulljabar Naji, and Klaudia Rosiak. “Convexifying of Polynomials by Convex Factor”. In Analitic and Algebraic Geometry 4, edited by Tadeusz Krasiński and Stanisław Spodzieja, 21–51. Poland: Lodz University Press, 2022. Accessed January 21, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1259/chapter/3668.