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2. Automata theory and control theory—a rapprochement;Arbib;Automatica,1966
3. Automaton decompositions and semigroup extensions;Arbib,1968
4. Controllability and observability in multivariable systems;Gilbert;J. SIAM Control,1963
5. Algebra automata II: The categorical framework for dynamical analysis;Give'on;In. Control,1968