Souroujon, Diko, and Teodora Zapryanova. “On the Number of Real Zeros of a Certain Kind of Polynomials”. Research and Applications Towards Mathematics and Computer Science Vol. 9 (February 5, 2024): 129–141. Accessed July 2, 2026. https://stm.bookpi.org/RATMCS-V9/article/view/13462.