In this paper, we examine differential subordination related to the harmonic mean in the case where a dominant is a linear function. A result for the first order Euler differential subordination of the nonlinear type is also discussed.
"Differential subordination of a harmonic mean to a linear function." Rocky Mountain J. Math. 48 (5) 1475 - 1484, 2018. https://doi.org/10.1216/RMJ-2018-48-5-1475