1. Traite de Ig Spedal Skled on elephantiasis des grece. Translated by Cosson Pares (1847). Quoted by Skinsnes, O.K.;Danielson;Int. J. Lepr.,1973
2. Features of Ridley-Jopling classification and its application in the clinical field;Kundu;Int. J. Lepr.,1979
3. The Ridley-Jopling five group classification of leprosy. Correlation of the classification in 1,429 leprosy patients;Meyer;Int. J. Lepr.,1979
4. Therapeutic trials in leprosy using serial biopsies;Ridley;Lepr. Rev.,1958
5. Histological classification and the immunological spectrum of leprosy;Ridley;Bull. WHO,1974