%0 Journal Article %@ 0001-6969 %A Aghdam Ahad Mehdizadeh %D 1985 %F acta:15048 %J Acta scientiarum mathematicarum %K Matematika %P 53-61 %T On the strong nilstufe of rank two torsion free groups %U http://acta.bibl.u-szeged.hu/15048/ %V 49 %Z Bibliogr.: 61. p.