On quasi-Hopf smash products and twisted tensor products of   quasialgebras
  We analyze some relations between quasi-Hopf smash products and certain twisted tensor products of quasialgebras. Along the way we obtain also some results of independent interest, such as a duality theorem for finite dimensional quasi-Hopf algebras and a universal property for generalized diagonal crossed products. 
Helena Albuquerque, Florin Panaite