Weak bialgebras and monoidal categories
  We study monoidal structures on the category of (co)modules over a weak bialgebra. Results due to Nill and Szlach\'anyi are unified and extended to infinite algebras. We discuss the coalgebra structure on the source and target space of a weak bialgebra. 
G. B\"ohm, S. Caenepeel and K. Janssen
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