TY - JOUR AU - Danchev, Peter V. TI - Subgroups of the basic subgroup in a modular group ring JO - Mathematica slovaca PY - 2005 SP - 431 EP - 441 VL - 55 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_2005__55_4_a4/ LA - en ID - MASLO_2005__55_4_a4 ER -