“…A bivariate real-valued function Υ : (0, ∞) × (0, ∞) → (0, ∞) is said to be a bivariate mean if min{ε, ζ } ≤ Υ (ε, ζ ) ≤ max{ε, ζ } for all ε, ζ ∈ (0, ∞). It is well known that the bivariate means are closely related to many special functions [8,19,26,30,31,44,45]. Recently, the inequalities between different bivariate means have attracted the attention of many researchers [27-29, 43, 47, 50].…”