1. Steinhaus, E. A., “Principles of Insect Pathology” (McGraw-Hill, N.Y., 1949).
2. Toumanoff, C., and Vago, C., Ann. Inst. Pasteur, 84, 376 (1953).
3. Toumanoff, C., and Vago, C., Ann. Inst. Pasteur, 82, 512 (1952).
4. Aoki, K., and Chigasaki, Y., Mitt. Mediz. Fakult. Kais. Univ. Tokio, 14, 59 (1915).
5. Hannay, C. L., Nature, 172, 1004 (1953).