@unpublished{SchulzeSeiler2008,
  author  = {Bert-Wolfgang Schulze and J{\"o}rg Seiler},
  title   = {Pseudodifferential boundary value problems with global projection conditions},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(2002) 04},
  year    = {2008},
}