@article{AlpermannHuberNatkeetal.2012,
  author    = {Alpermann, Anke and Huber, Walter and Natke, Ulrich and Willmes-van Hinckeldey, Klaus},
  title     = {Construct validity of modified time-interval analysis in measuring stuttering and trained speech patterns},
  series = {Journal of Fluency Disorders},
  volume    = {37},
  journal   = {Journal of Fluency Disorders},
  number    = {1},
  doi       = {10.1016/j.jfludis.2011.11.006},
  pages     = {42 -- 53},
  year      = {2012},
  language  = {en}
}
@article{AlpermannHuberNatkeetal.2010,
  author    = {Alpermann, Anke and Huber, Walter and Natke, Ulrich and Willmes-van Hinckeldey, Klaus},
  title     = {Measurement of speech patterns in stuttering: Interjudge and intrajudge agreement of experts by mean of modified time-interval analysis},
  series = {Journal of Fluency Disorders},
  volume    = {35},
  journal   = {Journal of Fluency Disorders},
  number    = {3},
  doi       = {10.1016/j.jfludis.2010.05.007},
  pages     = {299 -- 313},
  year      = {2010},
  language  = {en}
}