BibTeX
@ARTICLE{
         Engquist1980Acc,
       author = "Bjorn Engquist and Tom Smedsaas",
       title = "Automatic computer code generation for hyperbolic and parabolic differential
         equations",
       JOURNAL = "SIAM J. Sci. Stat. Comput.",
       year = "1980",
       volume = "1",
       number = "2",
       pages = "249--259",
       month = "June",
       REFERRED = "[Char1991CAa]."
}