1. Agents of trachoma and inclusion conjunctivitis;Jawetz;Ann. Rev. Microbiol.,1964
2. The present status of trachoma vaccination studies;Collier;Bull. Org. Mond. Santé,1966
3. Guerra, P. and Buogo, A.: Further contributions to the study of antitrachoma vaccination in Ethiopia. Proc. 20th Internat. Cong. Ophth. Munich, 1966.
4. Nomenclature of isolates of viruses from trachoma and inclusion blenorrhea;Gear;Nature,1963
5. Research on the virology of trachoma: Preliminary data;Felici;Rend. Inst. Sup. Sanità,1960