%0 Journal Article %A Ton, Dao-Rong %T Torsion classes and torsion prime selectors of $hl$-groups %J Mathematica slovaca %D 2000 %P 31-40 %V 50 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_2000__50_1_a3/ %G en %F MASLO_2000__50_1_a3