TY - JOUR AU - Ton, Dao-Rong TI - Torsion classes and torsion prime selectors of $hl$-groups JO - Mathematica slovaca PY - 2000 SP - 31 EP - 40 VL - 50 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_2000__50_1_a3/ LA - en ID - MASLO_2000__50_1_a3 ER -