@unpublished{GauthierTarkhanov2008,
  author  = {Paul M. Gauthier and Nikolai Nikolaevich Tarkhanov},
  title   = {A covering property of the Riemann zeta-function},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(2004) 03},
  year    = {2008},
}