@unpublished{LauterSeiler2008,
  author  = {Robert Lauter and J{\"o}rg Seiler},
  title   = {Pseudodifferential analysis on manifolds with boundary - a comparison of b-calculus and cone algebra},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(1999) 27},
  year    = {2008},
}