@book{kamke:1977:dll,
    author = {Kamke, Erich},
     title = {{D}ifferentialgleichungen: {L}{\"o}sungs\-meth\-od\-en und {L}{\"o}sungen.
              {T}eil {I}},
 publisher = {B. G. Teubner},
   address = {Stuttgart},
      year = {1977},
     pages = {xxvi+668},
  language = {German},
      isbn = {3-519-02017-3},
   mrclass = {34-XX (00A05 00A20)},
  mrnumber = {MR0466672 (57 \#6549)},
     zblno = {0354.34001}}