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3. Ueber Conjunctivitis and Keratitis phlyctenularis;Iwanoff;Klin. Monatsbl. f. Augenh.,1869
4. Horner: In C. Gerhardt: Handbuch der Kinderheilkunde. Tubergea, v. 5, Abt. 2, p. 279.
5. The pathogenesis of ophthalmia eczematosa;Goldenburg;J.A.M.A.,1917