@article{SchroheWalzeWarzecha1998,
  author    = {Schrohe, Elmar and Walze, Markus and Warzecha, Jan-Martin},
  title     = {Construction de triplets spectraux a partir de modules de Fredholm},
  year      = {1998},
  language  = {de}
}
@book{SchulzeSchrohe1997,
  author    = {Schulze, Bert-Wolfgang and Schrohe, Elmar},
  title     = {Arbeitsgruppe "Partielle Differentialgleichungen und Komplexe Analysis" (seit 1992)},
  series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  volume    = {1997, 12},
  journal   = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {61 S.},
  year      = {1997},
  language  = {de}
}