Srivastava, A., R. Singh, S. Varshney, P. Gupta, S. Bist, S. Bhagat, and N. Gupta. “Microbiological Evaluation of an Active Tubotympanic Type of Chronic Suppurative Otitis Media”. Nepalese Journal of ENT Head and Neck Surgery, vol. 1, no. 2, May 2011, pp. 14-16, doi:10.3126/njenthns.v1i2.4758.