@article{ZerbianDowningKuegler2009,
  author    = {Zerbian, Sabine and Downing, Laura and K{\"u}gler, Frank},
  title     = {Introduction : tone and intonation from a typological perspective},
  issn      = {0024-3841},
  doi       = {10.1016/j.lingua.2007.10.024},
  year      = {2009},
  language  = {en}
}
@article{AsuSchoetzKuegler2009,
  author    = {Asu, Eva-Liina and Sch{\"o}tz, Susanne and K{\"u}gler, Frank},
  title     = {The acoustics of Estonian Swedish long close vowels as compared to Central Swedish and Finland Swedish},
  isbn      = {978-91-633-4892-1 (print)},
  year      = {2009},
  language  = {en}
}