@article{AM2_1991__42_3_182444,
     author = {S.P. Zhou},
     title = {On a problem of {Davison.} {(Summary).}},
     journal = {Aequationes mathematicae},
     pages = {297--297},
     year = {1991},
     volume = {42},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/AM2_1991__42_3_182444/}
}