@ARTICLE{Shadle07,
  author  = {Christine H. Shadle and Michael Proctor and Khalil Iskarous},
  title   = {Whistly fricatives: MRI and acoustic data},
  journal = {The Journal of the Acoustical Society of America},
  year    = {2007},
  volume  = {121},
  pages   = {3167},
  number  = {5},
  url     = {http://asadl.org/jasa/resource/1/jasman/v121/i5/p3167_s2}
}