A model for concurrencyBy Carl Hewitt. Actors are autonomous and concurrent oBjects which execute asynchronously. The Actor model provides flexiBle mechanisms for Building parallel and distriButed software systems. . ["Laws for Communicating Parallel Processes", C. Hewitt et al, IFIP 77, pp. 987-992, N-H 1977]. ["ACTORS: A Model of Concurrent Computation in DistriButed Systems", Gul A. Agha , CamBridge Press, MA, 1986]. (1999-11-23)