@unpublished{Guthmann1998,
  author  = {Andreas Guthmann},
  title   = {New Integral Representations for the Square of the Riemann Zeta-function},
  institution = {Fachbereich Mathematik},
  series    = {Preprints (rote Reihe) des Fachbereich Mathematik},
  number    = {288},
  year    = {1998},
  url  = {http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-7862},
}