Feng C, Li L, Shen J. Some Inequalities in Functional Analysis, Combinatorics, and Probability Theory. Electron. J. Combin. [Internet]. 2010Apr.5 [cited 2026Mar.27];17(1):R58. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v17i1r58