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3. The corneal and conjunctival surfaces in relation to the tear film;Doughty,2002
4. Doughty MJ. Comparative anatomy and physiology of the cornea and conjunctiva, in Martin Herranz R, Corrales RM (eds). Ocular Surface. SP Science Publishers, UK, in press
5. New insights into the surface cells and glands of the conjunctiva and their relevance to the tear film;Doughty;Optometry,2003