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@article{CM_1994__91_1_47_0, author = {Wenpeng, Zhang}, title = {A problem of {D.} {H.} {Lehmer} and its generalization {(II)}}, journal = {Compositio Mathematica}, pages = {47--56}, publisher = {Kluwer Academic Publishers}, volume = {91}, number = {1}, year = {1994}, mrnumber = {1273925}, zbl = {0798.11001}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1994__91_1_47_0/} }
Wenpeng, Zhang. A problem of D. H. Lehmer and its generalization (II). Compositio Mathematica, Tome 91 (1994) no. 1, pp. 47-56. http://geodesic.mathdoc.fr/item/CM_1994__91_1_47_0/