Citation: Lu, Ya Ming et Yi, Yuan, A note on the Lehmer problem over short intervals, Acta mathematica Sinica. English series (Print) , 27(6), 2011, pp. 1115-1120
Citation: Lu, Ya Ming et Yi, Yuan, On the generalization of the D. H. Lehmer problem, Acta mathematica Sinica. English series (Print) , 25(8), 2009, pp. 1269-1274