Working Paper
                        
                        Bettadapura, Guruprasad S, Krishnamurthy  Donthi, Narendra P Datti, Bommanahalli G Ranganath, Shamanna B Ramaswamy, and Tejal S Jayaram.  
"Assessment of avoidable blindness using the rapid assessment of avoidable blindness methodology." North American journal of medical sciences 4, no. 9 (2012): 389-393.