@article{howiexxxxacoustical,
  title = {Acoustical studies of Mandarin vowels and tones},
  author = {HOWIE, John Marshall},
  xn-author = {howie, john marshall},
  year = {xxxx},
  address = {Princeton-Cambridge studies in Chinese linguistics, 6},
  keywords = {China;Language},
  x-extra = {Princeton-Cambridge studies in Chinese linguistics, 6},
  BAS = {257735},
  check = {howie:xxxx:acoustical},
  source = {bas},
}