Actors definition theory
A model for concurrency
by Carl Hewitt. Actors are autonomous and concurrent objects
which execute asynchronously
. The Actor model provides flexible mechanisms for building parallel and distributed
["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].