This paper is motivated by an open problem of Anderson, Vamanamurthy, and Vuorinen. We prove a chain of inequalities for hypergeometric functions, generalized and normalized Bessel functions, Kummer functions and for some general power series. Some particular cases and refinements are given. © 2006 Elsevier Inc. All rights reserved.
Baricz, Á. (2007). Functional inequalities involving special functions II. Journal of Mathematical Analysis and Applications, 327(2), 1202–1213. https://doi.org/10.1016/j.jmaa.2006.05.006