@article{Mertens2012,
  author    = {Volker Mertens},
  title     = {Parzivals doppelte Probe},
  journal   = {Zeitschrift f{\"u}r deutsches Altertum und deutsche Literatur, 108},
  editor    = {Kurt Ruh},
  volume    = {1980},
  number    = {108},
  pages     = {323 -- 339},
  year      = {2012}
}