I. Liman

Distribution and aetiology of blindness and visual impairment in mesoendemic onchocercal communities, Kaduna State, Nigeria. Kaduna Collaboration for Research on Onchocerciasis.

S. Cousens, J. Evans, I. Murdoch, 1994, The British journal of ophthalmology.

Visual field constriction as a cause of blindness or visual impairment.

S. Cousens, I. Murdoch, O. Babalola, 1997, Bulletin of the World Health Organization.

Prevalence and magnitude of trachoma in a local government area of Sokoto State, north western Nigeria.

N. Muhammad, R. Mansur, I. Liman, 2008, Nigerian journal of medicine : journal of the National Association of Resident Doctors of Nigeria.