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3. (3) Taniguchi, T., Seki, T., Okuno, Y., Fukai, K., Aoyama, A., Kotani, S., Tsujimoto, N., Yasuda, Y., Kusumoto, K. and Tsukihashi, T.: Studies on influenza, presented before the Meeting of the Influenza Committee supported by the Research Fund of Japanese Ministry of Education, held on June 2, 1953.
4. (4) Misao, T.: Studies on influenza, presented before the Meeting of the Virus Research Committee supported by the Research Fund of Japanese Ministry of Education, held on September 11, 1954.
5. (5) Okuno, Y.: private communication, September 11, 1954.