@article{CM_1993__86_3_307_0,
     author = {Wenpeng, Zhang},
     title = {On a problem of {D.} {H.} {Lehmer} and its generalization},
     journal = {Compositio Mathematica},
     pages = {307--316},
     publisher = {Kluwer Academic Publishers},
     volume = {86},
     number = {3},
     year = {1993},
     mrnumber = {1219630},
     zbl = {0783.11002},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1993__86_3_307_0/}
}