1. H. T. Kung, “The structure of parallel algorithms,”Adv. Comp.,19, 65–112 (1980).
2. V. B. Kudrjavcev, S. V. Aljeshin, and A. S. Podkolzin,Introduction to Automata Theory [in Russian], Nauka, Moscow (1985).
3. K. V. Shakhbazjan, “On the representation of processes in graphs,”Sov. Math. Dokl.,10, No. 2 (1990).
4. K. V. Shakhbazjan, “On the algebra of processes in graphs,”Kibernetika,6, 38–42 (1998).