Source : Free On-Line Dictionary of Computing

Actors
     
         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} software
        systems.
     
        {(http://osl.cs.uiuc.edu/)}.
     
        ["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)