BibTeX
@ARTICLE{
         Wengert1964ASA,
       author = "R.~Wengert",
       title = "A Simple Automatic Derivative Evaluation Program",
       journal = "Communications of the {ACM}",
       pages = "463--464",
       key = "Wengert1964ASA",
       abstract = "A procedure for automatic evaluation of total and partial derivatives of arbitrary
         algebraic functions is presented. The numerical values of derivatives are computed without
         developing analytic expressions for the derivatives. The function is decomposed into a sequence of
         elementary expressions A library is provided for differentiating of elementary functions.",
       keywords = "point algorithm; differentiation arithmetic; computer program.",
       referred = "[Casanova2002AoA], [Rall1996AIt].",
       year = "1964",
       volume = "7",
       number = "8",
       ad_theotech = "General"
}