@unpublished{IlyasovOstermannPunzi2009,
  author  = {Maxim Ilyasov and Isabel Ostermann and Alessandro Punzi},
  title   = {Modeling Deep Geothermal Reservoirs: Recent Advances and Future Problems},
  institution = {Fachbereich Mathematik},
  series    = {Schriften zur Funktionalanalysis und Geomathematik},
  number    = {47},
  year    = {2009},
  url  = {http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-16322},
}