@unpublished{BlanchardMathe2012,
  author  = {Gilles Blanchard and Peter Math{\´e}},
  title   = {Discrepancy principle for statistical inverse problems with application to conjugate gradient iteration},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprints des Instituts f{\"u}r Mathematik der Universit{\"a}t Potsdam},
  number    = {1 (2012) 7},
  year    = {2012},
}