@ARTICLE{Shadle06,
  author  = {Christine H. Shadle and Khalil Iskarous and Michael I. Proctor},
  title   = {Articulation of fricatives: Evidence from X-ray microbeam data},
  journal = {The Journal of the Acoustical Society of America},
  year    = {2006},
  volume  = {119},
  pages   = {3301},
  number  = {5},
  url     = {http://asadl.org/jasa/resource/1/jasman/v119/i5/p3301_s3}
}