Authors disagree as to whether laryngealization should be included in the list of
secondary articulations (Laver, J. (1994): Principles of Phonetics. Cambridge University Press, p.330).
The secondary laryngeal constriction manifests itself as creaky voice, and since
creaky voice is just one of several possible phonation types, it may well be better
to view it as a laryngeal setting rather than a secondary articulation (Ladefoged, P. / Maddieson, I. (2008): The Sounds of the World's Languages. Malden, MA: Blackwell, p.53).
In addition, it is often not easy to assign laryngealization unambigously to a
single segment.
Bura Approximants
Danish stød
Hausa stops
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