K. . Chopra, P. . Prakash, S. . Bhansali, A. . Mathur, and P. K. . Gupta, “Incidence & Prevalence of Silico tuberculosis in Western Rajasthan: A Retrospective Study of Three Years”, Natl J Community Med, vol. 3, no. 01, pp. 161–163, Mar. 2012.