%0 Journal Article %A Voloch, José Felipe %T On a Question of Buium %J Canadian mathematical bulletin %D 2000 %P 236-238 %V 43 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2000-031-6/ %R 10.4153/CMB-2000-031-6 %F 10_4153_CMB_2000_031_6