1. Spaces with finitely many non-trivial homotopy groups;Loday;J. Pure Appl. Algebra,1982
2. Free 2-crossed complexes of simplicial algebras;Mutlu;Math. Comput. Appl.,2000
3. Freeness conditions of tensors and coproducts of groups;Mutlu;Math. Comput. Appl.,2004
4. Freeness conditions for 2-crossed modules and complexes;Mutlu;Theory Appl. Categ.,1998
5. Higher dimensional crossed modules and the homotopy groups of (n+1)-ads;Ellis;J. Pure Appl. Algebra,1987