MajumderS., and SahaS. “A Note on the Uniqueness of Certain Types of Differential-Difference Polynomials”. Ukrains’kyi Matematychnyi Zhurnal 73, no. 5 (May 24, 2021): 679 - 694. Accessed December 4, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/379.