@unpublished{SchroheSchulze2008,
  author  = {Elmar Schrohe and Bert-Wolfgang Schulze},
  title   = {Edge-degenerate boundary value problems on cones},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(1999) 06},
  year    = {2008},
}