@misc{Tis92,
  author = {C. Tischendorf},
  title = {Die {BDF} f{\"ur} nichtlineare {A}lgebro-{D}if\-feren\-tial\-glei\-chun\-gen
	vom {I}ndex 2},
  year = {1992},
  note = {Humboldt-Univ.\ of Berlin, Diplom\-ar\-beit}
}