"Abstract: Inspired by ACTORS, we have implemented an interpreter for a LISP-like language, SCHEME, based on the lambda calculus, but extended for side effects, multiprocessing, and process synchronization."
<a href="https://en.wikipedia.org/wiki/en:Gerald_Jay_Sussman" class="extiw" title="w:en:Gerald Jay Sussman">Gerald Jay Sussman</a> and <a href="https://en.wikipedia.org/wiki/en:Guy_L._Steele,_Jr." class="extiw" title="w:en:Guy L. Steele, Jr.">Guy Lewis Steele, Jr.</a>
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