On the Number of Automorphisms of a Singly Generated Automaton CACM September, 1970 Bavel, Z. automata, finite automata, singly generated automata, automorphisms, generators, length of state, minimal-length generators, orbit 5.22 CA700914 JB February 10, 1978 9:54 AM 1991 5 1991 1991 5 1991 1991 5 1991