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A problem of D. H. Lehmer and its mean square value formulaWenpeng, ZHANG · Japanese journal of mathematics. New series · 2003
On a conjecture of the Euler numbersWenpeng Zhang; Zhefeng Xu · 2007
On a problem of D.H. Lehmer over short intervalsZhefeng Xu; Wenpeng Zhang · 2006
The mean value of Hardy sums over short intervalsXu, Zhefeng; Zhang, Wenpeng · Proceedings of the Royal Society of Edinburgh: Section A Mathematics · 2007
An interesting identity and asymptotic formula related to the Dedekind sumsXu, ZheFeng; Zhang, WenPeng · Science China Mathematics · 2014
On the mean value of the two-term exponential sums with Dirichlet charactersZhefeng Xu; Tianping Zhang; Wenpeng Zhang · 2007
On a hybrid mean value of the character sums over short intervalsXu, Zhefeng; Zhang, Wenpeng · Functiones et Approximatio Commentarii Mathematici · 2009
On the order of the high-dimensional Cochrane sum and its mean valueXu Zhefeng; Zhang Wenpeng · 2006