1. CI-IIANG, C. L. AND REEVES, W. C. (1962) : Statistical estimation of virus infection rates in mosquito vector populations. Am. J. Hyg., 75, 377-391.
2. DIERCKS, F. H. AND HAMMON, W. MCD. (1958) : Hamster kidney cell tissue cultures for propagation of Japanese B encephalitis virus. Proc. Soc. Exptl. Biol. Med., 97, 627-632.
3. HARDY, J. L. (1966) : Culex tarsalis Coquillett as a vector of an attenuated strain of western equine encephalomyelitis virus. Proc. Soc. Exptl. Biol. Med., 121, 402-405.
4. INOUE, Y. KANDA (1964) : An attenuated mutant of Japanese encephalitis virus. Bulletin WHO, 30, 181-185.
5. KODAMA, K., SASAKI, N. AND INOUE, Y. KANDA (1968) : Studies of live attenuated Japanese encephalitis vaccine in swine. J. Immunol., 100, 194-200.