J Sándor - Aequationes Mathematicae, 1990 - Springer
Let a, b> 0 be positive real numbers. The identric mean I (a, b) of a and b is defined by I= I (a,
b)=(1/e)(bb/aa) 1/(b− a), for a≠ b, I (a, a)= a; while the logarithmic mean L (a, b) of a and b is …