Hausa glottalic consonants: a laryngographic study

@article{Lindsey1992HausaGC,
  title={Hausa glottalic consonants: a laryngographic study},
  author={Geoff Lindsey and Katrina Hayward and Andrew Haruna},
  journal={Bulletin of the School of Oriental and African Studies},
  year={1992},
  volume={55},
  pages={511 - 527}
}
The Chadic (Afroasiatic) language Hausa, spoken mainly in Nigeria and the Republic of Niger, has a series of ‘glottalic’ obstruents. This includes both ejectives ([k’], [s’] or [ts’]; orthographic κ, ts) and two other consonants which have often been described as ‘implosives’ and are represented by the IPA symbols for implosives in Hausa orthography (б, d). In addition, there is a ‘laryngealized’ palatal glide (orthographic ‘y). The description of orthographic б, d as implosive has been called… 
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