1. C. Balteanu, Z. Feodorowicz, R. Schwänzl, R. Vogt, Iterated Monoidal Categories, 1997
2. Homotopy coherent category theory andA∞;Batanin;J. Pure Appl. Algebra,1998
3. On the definition of weakω;Batanin;Macquarie University Report,1996
4. Higher-Dimensional Algebra I: Braided monoidal 2-categories;Baez;Adv. Math.,1996
5. Higher-Dimensional Algebra and Topological Quantum Field Theory;Baez;J. Math. Phys.,1995