Citation: | LI Shaoyun, QIAN Weimao, XU Huizuo. Sharp bounds for Sándor-Yang means in terms of single parameter harmonic and contra-harmonic means[J]. Journal of East China Normal University (Natural Sciences), 2020, (4): 26-34. doi: 10.3969/j.issn.1000-5641.201911015 |
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