1. American Trudeau Society: “Report of the Subcommittee on Clinical Classification on Revision of Diagnostic Standards,”;Amer. Rev. Tubere.,1950
2. “The Relapse Problem After Resection Therapy,”;KRAAN;Bull. Internat. Union Against Tuberc.,1959
3. “Indikationen zur Resektion wegen Lungentuberkulose und die Resultate dieser Therapie,”;KRAAN;Thoraxchirurgie,1959
4. “Relapse During and After Treatment of Pulmonary Tuberculosis,”;ROSS;Bull. Internat. Union Against Tuberc.,1959
5. “An Assessment of Antibacterial Treatment Used Alone or in Association with Surgical Operation in the Treatment of Pulmonary Tuberculosis,”;EDGE;Thorax,1961