1. Thomsen, B.: A calculus of higher order communicating systems. In: Proc. of POPL 1989, pp. 143–154. ACM Press, New York (1989)
2. Thomsen, B.: Plain CHOCS: A second generation calculus for higher order processes. Acta Inf. 30(1), 1–59 (1993)
3. Sangiorgi, D.: Expressing Mobility in Process Algebras: First-Order and Higher-Order Paradigms. PhD thesis CST–99–93, University of Edinburgh, Dept. of Comp. Sci. (1992)
4. Lanese, I., Pérez, J.A., Sangiorgi, D., Schmitt, A.: On the expressiveness and decidability of higher-order process calculi. In: Proc. of LICS 1908, pp. 145–155. IEEE Computer Society Press, Los Alamitos (2008)
5. Minsky, M.: Computation: Finite and Infinite Machines. Prentice-Hall, Englewood Cliffs (1967)