1. Ueber Zelleinschlüsse parasitärer Natur bei Trachom;Halberstaedter;Arb. a. d. K. Gesundheitsamte,1907
2. The etiology of trachoma;Noguchi;Supp. No. 2. Jour. Exper. Med.,1928
3. Inoculation of human conjunctiva with trachomatous materials;Thygeson;Amer. Jour. Ophth.,1933
4. Busacca, A. Sulla presenza di germi simili a Rickettsie nei tessuti tracomatosi. XIV. Cong. Intern. Oftalmol., Madrid, 1933.