1. Tensor product of operads and iterated loop spaces;Dunn;J. Pure Appl. Algebra,1988
2. En-monoidal categories and their group completions;Dunn;J. Pure Appl. Algebra,1994
3. G. Dunn, K-theory of braided tensor ring categories with higher commutativity, in preparation.
4. Symmetric and braided bar constructions;Fiedorowicz,1991
5. An introduction to Tannaka duality and quantum groups;Joyal,1991