资料来源 : Free On-Line Dictionary of Computing

S-ALGOL
     
        Orthogonal data structures on ALGOL 60.  "S-Algol Language
        Reference Manual", R. Morrison, TR CS/79/1 U St Andrews, 1979.
        "An Introduction to Programming with S-Algol", A.J. Cole &
        R. Morrison, Cambridge U Press 1982.