1. Andrade, Z.A., in: Progress in Liver Disease. Eds H. Popper and F. Schaffner. Grune & Stratton, New York 1965.
2. Warren K.S., Trans. R. Soc. trop. Med. Hyg.66 (1972) 417.
3. Boros, D.L., and Warren, K.S., J. exp. Med.132 (1970) 488.
4. Warren, K.S., Helminth. Abstr.42 (1973) 591.
5. Auriault, C., Capron, M., Cesari, I.M., and Capron, A., J. Immun.131 (1983) 464.