Author: Zhang, Yulong

Ma, Rong; Zhang, Yulong: On a kind of generalized Lehmer problem. (English). Czechoslovak Mathematical Journal, vol. 62 (2012), issue 4, pp. 1135-1146
Ma, Rong; Yi, Yuan; Zhang, Yulong: On the mean value of the generalized Dirichlet $L$-functions. (English). Czechoslovak Mathematical Journal, vol. 60 (2010), issue 3, pp. 597-620

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