@unpublished{CalvoSchulze2009,
  author  = {D. Calvo and Bert-Wolfgang Schulze},
  title   = {Operators on corner manifolds with exit to infinity},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(2005) 01},
  year    = {2009},
}