Suneel Kr. Dixit, Dr. Hitendra Ahooja, Mahesh Sharma, Gaurav Dubey, Dr. Himanshu Tripathi, Dr. Jitendra Singh, Md. Masihhuzzaman, Nitesh Pradhan, “Visual Impairment: Blind School Survey at Gurugram Haryana India”, Annals of RSCB, pp. 2126–2140, Jan. 2021.