Source : Free On-Line Dictionary of Computing

Communicating Sequential Processes
     
         (CSP) A notation for {concurrency} based
        on {synchronous message passing} and selective communications
        designed by {Anthony Hoare} in 1978.  It features {cobegin}
        and coend and was a precursor to {occam}.
     
        See also {Contextually Communicating Sequential Processes}.
     
        ["Communicating Sequential Processes", A.R. Hoare, P-H 1985].
     
        (1994-11-01)