Fan Zhang, Wei-Mao Qian
      Bounds for the arithmetic mean in terms of the Neuman, harmonic and contraharmonic means
      International Mathematical Forum, Vol. 9, 2014, no. 16, 753-762
      http://dx.doi.org/10.12988/imf.2014.4343

Copyright © 2014 Fan Zhang and Wei-Mao Qian. This article is distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.