@Article{Proctor16a,
  author  = {Proctor, Michael I},
  title   = {Investigating patterns of vowel production using real-time magnetic resonance imaging},
  journal = J_ASA,
  year    = {2016},
  volume  = {140},
  number  = {4},
  pages   = {3223},
  doi     = {10.1121/1.4970172}
}