1. Nerves of multiple categories;Agl,1993
2. Distributive Laws;Beck,1969
3. The shift functor and the comprehensive factorization for internal groupoids;Bourn;Cahiers Topologie Géom. Différentielle,1987
4. The tower of n-groupoids and the long cohomology sequence;Bourn;J. Pure Appl. Algebra,1989
5. Another denormalization theorem for the abelian chain complexes;Bourn;J. Pure Appl. Algebra,1990