@unpublished{HarutjunjanSchulze2008,
  author  = {Gohar Harutjunjan and Bert-Wolfgang Schulze},
  title   = {Asymptotics and relative index on a cylinder with conical cross section},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(2002) 27},
  year    = {2008},
}