Mathematical and Computational Applications, vol.9, no.3, pp.417-426, 2004 (Scopus, TRDizin)
Using a free simplicial group with given a CW-basis, we give an alternative description of the top group of the free square complex and 2-crossed complex of groups on 2-construction data in terms of tensors and coproducts of crossed module of groups. Therefore the functors are given between these categorical constructions.