1. Hoeppli, R., Feng, L. C. and Chu, H. J. (1938) : Attempt to culture helminths of vertebrates in artificial media. Chinese M. J., Suppi. 2, 343-374.
2. Ito, J., Yasuraoka, K. and Komiya, Y. (1955) : Studies on the survival of Schistosoma japonicum in vitro. 1. Survival in blood or serum media. Jap. J. Parasitol., 4, 12-18 (text in Japanese with English summary) .
3. Ito, J. and Komiya, Y. (1955) : Studies on the survival of Schistosoma japonicum in vitro. 2. Survival in chemical defined artificial medium. Jap. J. Parasitol., 4. 258-261 (text in Japanese with English summary) .
4. Umbreit, W. W., Burrs, R. H. and Stauffer, J. F. (1951) : Manometric techniques and tissue metabolism, 6th Ed. Burgess pub. Co., Minneapolis.
5. Yokogawa, M., Oshima, T. and Kihata, M. (1955) : Studies to maintain excysted metacercariae of Paragonimus westermani in vitro. Jap. J. Parasitol., 4, 388-399 (text in Japanese with English summary) .