1. Rook’s Textbook of Dermatology;D. Lockwood,2004
2. Classification of Leprosy according to immmunity: Five group system;D.S. Ridley;Inter J lepr other Micobacterial Diseases,1966
3. Clinical features and outcome of reversal (type 1) reactions in Hyderabad;D.N. Lockwood;International journal of leprosy and other mycobacterial diseases: official organ of the International Leprosy Association,1993
4. Interventions for erythema nodosum leprosum (Review);N. Van Veen;Cochrane Database of Systematic Reviews,2009
5. Clinical Course of Erythema Nodosum Leprosum: An 11-year Chohort Study in Hyderabad, India;L. Pocaterra;Am. J. Trop. Med. Hyg.,2006