@article{FedosovSchulze1996,
  author    = {Fedosov, Boris V. and Schulze, Bert-Wolfgang},
  title     = {On the index elliptic operators on a cone},
  year      = {1996},
  language  = {en}
}
@article{SchulzeTarchanov1996,
  author    = {Schulze, Bert-Wolfgang and Tarchanov, Nikolaj N.},
  title     = {Coordinate invariance of the wedge Sobolev spaces = Wedge Sobelev spaces},
  year      = {1996},
  language  = {en}
}