@unpublished{SchulzeTarkhanov2008,
  author  = {Bert-Wolfgang Schulze and Nikolai Nikolaevich Tarkhanov},
  title   = {The Riemann-Roch theorem for manifolds with conical singularities},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(1997) 18},
  year    = {2008},
}