BibTeX
@ARTICLE{
         Beck1995TIP,
       author = "T. Beck and Herbert Fischer",
       title = "The {IF}-Problem in Automatic Differentiation",
       journal = "Journal of Comput. Appl. Math.",
       pages = "119--131",
       key = "Beck1995TIP",
       referred = "[Berz2001TaU], [Kearfott1996ADo].",
       year = "1995",
       volume = "50"
}