BibTeX
@BOOK{
         Kolchin1985DAG,
       AUTHOR = "Ellis Robert. Kolchin",
       TITLE = "Differential Algebraic Groups",
       PUBLISHER = "Academic Press",
       SERIES = "Pure and Applied Mathematics",
       NUMBER = "114",
       ADDRESS = "Orlando",
       YEAR = "1985",
       REFERRED = "[Pusch1996JSa].",
       ISBN = "0124176402"
}