Methods of the Algebraic Theory of Machines. I: Decomposition Theorem for Generalized Machines; Properties Preserved under Series and Parallel Compositions of Machines.

Kenneth Krohn Richard Mateosian John Rhodes Methods of the Algebraic Theory of Machines. I: Decomposition Theorem for Generalized Machines; Properties Preserved under Series and Parallel Compositions of Machines. 55-85 1967 1 J. Comput. Syst. Sci. 1 db/journals/jcss/jcss1.html#KrohnMR67