1. Machines in a category;Arbib;SIAM Review,1974
2. M. A. Arbid and E. G. Manes, The monoid of a machine in a category, to appear.
3. Adjoint machines, state behaviour machines, and duality;Arbib,1973
4. M. A. Arbib and E. G. Manes, Kleisli machines, to appear.
5. Tree transductions and families of tree languages;Baker,1973