@article{Straka1997,
  author    = {Straka, Ute},
  title     = {Das Wort-Ton-Verh{\"a}ltnis im Gregorianischen Choral},
  year      = {1997},
  language  = {de}
}
@phdthesis{Straka1998,
  author    = {Straka, Ute},
  title     = {Die Pflege des Gregorianischen Chorals im deutschsprachigen Raum},
  pages     = {195 Bl. : Notenbeisp.},
  year      = {1998},
  language  = {de}
}