Applied Categorical Structures, vol.9, no.2, pp.111-130, 2001 (SCI-Expanded, Scopus)
We introduce a pairing structure within the Moore complex NG of a simplicial group G and use it to investigate generators for NGn ∩ Dn where Dn is the subgroup generated by degenerate elements. This is applied to the study of algebraic models for homotopy types.