Source : Free On-Line Dictionary of Computing

SDF
     
        Syntax Definition Formalism.  A language for lexical and
        syntactic specification.
     
        ["The Syntax Definition Formalism SDF - Reference Manual",
        J. Heering et al, Centre for Math & CS, Amsterdam].
     
        ["Algebraic Specification", J.A. Bergstra et al eds, ACM Press
        1989, Chap 6.  To appear].
     
        (1994-10-27)