Suggested Readings
Halle, Morris. 1992. "Phonological features". International encyclopedia of linguistics,Vol. III, ed. by William Bright, 207-11. Oxford: Oxford University Press.
Ladefoged, Peter, and Ian Maddieson. 1996. The sounds of the world's languages.Oxford, UK and Cambridge, MA: Blackwell.
McCarthy, John J. 1988. "Feature geometry and dependency: A review". Phonetica 45. 84-108.