Source : Free On-Line Dictionary of Computing

Vlisp
     
        Patrick Greussay  ca 1973.
     
        A {Lisp} dialect with a fast {interpreter} and a portable
        {virtual machine}.  Introduced the "{chronology}", a dynamic
        environment for implementing interrupts.  Led to {Le_Lisp}.
        See also {ObjVlisp}.
     
        ["Contribution a la Definition Interpretive et a
        l'Implementation des Lambda-Langages", P. Greussay, These
        d'Etat, U Paris VI, Nov 1977].